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Arched or Sunburst

The upper part of the opening is arched in a half circle or lazy circle with shutter blades in a fan style.

Awning Sash

A frame in which the panes of a window are set. The frame is built in such a way that the bottom swings outward in a window frame.

Awning Window Unit

A combination of a frame, one or more awning sashes, weather-strip and an operating device assembled as a complete and properly operating unit; screens and/or storm sash are optional; the unit may contain one or more fixed or non-operative sashes in combination with the operative sash.

Basement Sash

A frame in which the panes of glass are set. The awning style sash usually consists of one, two or three vertical lights. It is designed to swing inward from the top or the bottom.

Basement Window

A sash unit, usually in-swinging from the top or bottom. Typically used for basement or cellar sash openings. It usually consists of one, two or three glass lights, and may include screens or storm panels.

Bay Window

A bay window is made up of three or more windows. The side or flanker units project out from the building in 30, 45, or 90-degree angles. The centre is parallel with building wall and is made up of one or more windows. All the units can be stationary, operating, or any combination thereof.

Bead

A semicircular or rounded profile worked on wood; also a small moulding to secure glass or panels to doors, hence glass bead.

Bevelled Raised Door Panel

A raised door panel with the edges of the raised face at an angle or radius.

Blade

A shutter Slat profile usually contoured elliptically

Bifold Door

A segmented, hinged door that folds into itself and slides on a head track to the side when opened. A typical 4-0, 5-0, or 6-0 door is made up of four door segments: two folding to the right and two to the left. This door was first used during the 19th century.

Bottom Rail

A horizontal rail at the bottom of a sash, door, balustrade, blind or other panel assembly.

Bow

A form of warp that is in excess of 6mm (1/4" ) in the plane of the door. The measurement is taken over the length of the door.

Bay Window

A series of four or more adjoining window units, commonly five in number, installed on a radius from the wall of the building.

Butt Hinge

A door hinge with one leaf let in or routed into the door frame jamb and the other into the edge of the door. A standard residential interior hinge measures 75 mm x 75 mm (3 ? x 3 ?) when laid out flat. A standard residential exterior hinge will measure 100 mm x 100 mm (4" x 4")

Bypass

When two or more panels on overhead tracks will slide past and underneath each other. A bypass can be designed to allow louvers to be fully open or closed only in the stacked position. For the louvers to be open, the stack separation is in relation to the size of the louvers.

Caf Door

A single door or pair of half-width doors, hung in the middle of a doorway, that swing both inward and outward to allow entry; similar to saloon doors in the Old West.

Casement Sash Unit

A combination of frame, casement sash, weather-strip and operating device assembled as a complete and properly operating unit; screens and/or storm sash are optional.

Casement Window

A window in which the frame is built in such a way that the sash can open out like a door when installed in a window unit. Historically, casements were the first working windows. These windows were strategically placed throughout a house to capture breezes and direct them through the rooms. Screens were placed internally to prevent insects from entering the house.

Casing

Moulded or surfaced four-sided lining used to trim a door or window opening, also known as a reveal. A casing may be classified as exterior or interior as far as window and exterior door frames are concerned.

Check Rail

In double-hung windows, this is the bottom rail of the upper sash and the upper rail of the lower sash, where the lock is mounted. It is also know as a Meeting Rail.

Combination Door

A door that is made with a wood panel as the bottom half and a screen for ventilation as the top half. Also called a ventilating door. Can be used as a Balustrade as the lower, with a sliding or bi folding to the upper.

Composite Door Panel

A door panel of a material other than solid wood or plywood.

Conduction

The transfer of heat through a solid material, such as glass or wood, through direct contact. Heat flows from a higher-temperature area to a lower-temperature.

Convection

The flow of heat that occurs through circulating air, as warm air rises and cool air sinks. Convective heat transfer can take place in large areas (like rooms and buildings) and in small areas.

Condensation

Moisture or humidity in the air that forms on a cool surface such as a pane of glass. When moist air comes in contact with a cool surface it shrinks. If it shrinks enough to reach 100% humidity or the dew point, moisture will form on the cool surface.

Core

The centre of plywood or cross-banded construction; it may consist of timber (solid or glued), particleboard or veneer. Also core unit; innermost layer in veneered door construction.

Cove and Bead

A moulding profile consisting of a cove and a bead; also called Scotia with bead; glass bead or stop.

Curved shutters

Conform to the curve at the top of the opening. Louvers are all horizontal and the upper most louvers may be fixed due to curve restrictions.

Custom shapes and applications

Please call for assistance. We will assist you in preparing a pattern.

Dado

The finishing of an interior wall from the floor to about waist height.

Danish Oil

A solvent based blend of oils and resins which penetrate, seals, feeds and finishes all varieties of wood, without leaving a surface film to chip or scratch.

Decorative Entry System

An entryway made up of a door in a frame, one or two sidelights, and a transom and maybe a hi light.

Delamination

A separation of the fibre or layers of wood, or two layers of glass to the interlayer through failure of the adhesive or vacuum process.

Direct Solar Transmission

Heat radiation transmitted by the Shutter Panel as a fraction of total solar heat hitting the Shutter

Dimensional Stability

The ability of a material to stay put or to resist changes in its dimensions due to temperature, moisture or physical stress variations; stability of a material.

Divider rails

Divider rails are utilized to provide additional strength to a very tall panel and allow separate operation of the louvers above and below the divider rail. For example, divider rails can be utilized when you want to close the lower louvers for privacy and open the louvers above the divider rail for light and ventilation control.

Door

A millwork assembly of stiles, rails, and panels that swings, slides, tilts up or folds in order to close an opening in a wall or cabinet. A modern door may be used on the exterior or interior, and may be either flush or panel type.

Door Casing

Same as casing; may be an interior or exterior door casing; exterior door casings are installed only on the outside of exterior door frames, especially on wood facing wood-frame exterior walls.

Door Frame

A group of wood, steel or Aluminium joinery parts machined and assembled to form an enclosure and support for a door; door frames are classified either as exterior or interior door frames.

Door Jamb

The part of a door frame that surrounds and contacts the edges of the stiles and the top rail of a door. Jambs may be classified as head or side jambs and as plain or rabbeted.

Door Panel

A sheet of thin timber, plywood or composition material inserted into the frame formed by the stiles, rails and mullions of a door.

Door Skin

A face panel (usually two or more plies) of a flush door.

Door Trim

The mouldings required to finish or trim the side of a door frame, consisting of two pieces of side and one of head casing.

Double-Glazing

Two panes of glass separated by an air space; double glazing may be accomplished by storm sash or insulating glass; this term sometimes refers to storm sash.

Double Glazing Panel

A removable glass panel that allows insulation and condensation control.

Double-Hung Window

Two sashes, top and bottom, that slide vertically past each other, joined by a meeting rail and held in any open position by means of weights or one of several types of balancing devices.

Dovetail Joint

A joint formed by inserting a projecting wedge-shaped member into a correspondingly shaped cutout member.

Emissivity

The relative ability of a surface to reflect or emit heat by radiation. Emissivity factors range from 0.00 to 1.00. The lower the emissivity, the less heat that is emitted through a window system. Emissivity is typically measured by U-factor (or its inverse, R-factor).

Entrance

An exterior door frame with or without transom or sidelight (usually used for the main or front entrance of a structure) with decorative exterior trim; trim may include pilasters, entrance head or cap or a decorative exterior casing.

Entrance Door

A door on the front or main entrance of a structure; may be single or paired.

Entrance Head

The portion of the entrance above the door opening; also called entrance cap; commonly used when the head is other than a pediment.

Exterior Casing

A casing that trims the exterior of a window or door frame and serves as the boundary moulding for the siding material; forms a rabbet with the blind stop or a jamb for the screen.

Extrusion

A form produced by forcing material through a die. Most long section Structural or Architectural lengths are extruded to that shape.

Fabricator

The person or firm that assembles all the component parts into a complete window, door or sash unit.

Fibre Board

A broad term used to describe wood sheet material of widely varying densities manufactured of refined or partly refined wood fibres. Also known as chip board, struct a floor. MDF (medium density fibreboard) or particle board.

Finger joint

A series of fingers machined on the ends of two pieces to be joined, which mesh together and are held firmly in position by a water-resistant adhesive. Usually produced from varying lengths of remnant-machined timber, which is then re machined into dimensioned timber.

Finish

The interior or exterior finish of a structure; the finished or actual size of a piece of timber; the protective coating given a wood member; upper or select grades of softwood timber.

Fire-Rated Door

A door that is required by building codes for certain parts of a building - between the garage and the house for residences for instance - and takes a certain number of minutes to burn; usually 20, 60, or 90 minutes.

Fixed

Refers to a window that is non-venting or inoperable.

Flat Door Panel

A door panel consisting of a flat piece of plywood, solid wood or other material in contrast to a raised door panel.

Flush Door

A door consisting of a core, cross-banding and flat-face veneers, or a door consisting of a core and flat-face veneers only.

French Door

An interior or exterior door consisting of stiles, top and bottom rail and divided glass panels or lights; often used in pairs as a casement or terrace door. Often used as internal doors leading to rooms containing more natural light, such as conservatories, glasshouses and vestibules.

French Casement Window

Two casement sashes, each hinged on one stile and opening in the middle but with no centre mullion. This allows a smaller rough opening to make egress since there is a large unobstructed opening.

Garden Window

A box-shaped window that hangs outside the house and can be used as a greenhouse for plants. It has a slanted glass roof that pulls in heat and light from the sun.

Glazing

The insertion of glass into sashes and doors. Glazing also refers to the lowest quality of plate glass. The purpose of glazing is to retain the glass adequately under the design load, provide effective weathering sealing, prevent loads or pressure points on the glass resulting from building movement, prevent glass-to-metal contact, and minimize glass breakage from mechanical or thermal stress.

Grain

An arrangement and direction of alignment for wood elements or fibres; can be straight or spiral grain; also used loosely to indicate texture.

Gliding Door

A door that opens by sliding along a horizontal track, either in the floor or on the ceiling; often found in rooms with limited space and where a door opening inward into the room cannot be used.

Hand

A term describing the swinging direction of a door as one stands on the side of the door from which security is desired, namely the outside. A simple way to tell the hand of a door is to stand next to the hinges and with the door about to open towards you卼his is a Left Hand Door.

Hanging strips

Simple rectangular pieces that are usually mounted outside on each side of an opening. The simplest of all installations is the inside mount hang strip where the strip is recessed in the opening (check that there is enough rotation on the clearance table) An offset or wraparound hinge is used to mount the panel to the hanging strip.

Hardboard

A board material manufactured of wood fibre, which is then refined or partly refined to form a panel produced under carefully controlled optimum combinations of consolidating pressure, heat and moisture so that the board produced has a characteristic natural ligneous bond.

Hardware

Hinges are provided in bright brass, antique brass, white powder coated or brushed aluminum finishes at no extra charge. Hinge styles include 3-inch butt hinges for mortised panels, 3-inch non-mortised hinges and wraparound hinges. Non-mortised hinges will be provided unless otherwise requested. Knobs are not provided. Should you desire knobs, we suggest you visit your local hardware store to choose the style you would like.

Hardwood

One of the botanical groups of trees that has broad leaves in contrast to the needle-like leaves of the conifers or softwoods; some hardwoods are deciduous (they shed their leaves in the fall or at the end of each growing season). The grain of the hardwood is dense, but not all hardwoods are hard.

Hinge

A jointed or flexible device on which a door or window turns. It is made of Steel or Aluminium mostly. There are various types and styles of hinges such as mortice, offset, butt, bearing and non-mortice and many more.

Hollow-Core Flush Door

A flush door with a core assembly of strips or other units of wood, wood derivative or insulation board, that supports the outer faces and has intervening hollow cells or spaces.

Horizontal Light

A light or cut-out formed by a horizontal bar extending from stile to stile of a sash or door.

Horizontal-Gliding Window

Two or more sashes that slide horizontally past each other; one or more of the sashes may be fixed or inoperative or all the sashes may operate; in a closed position, the sashes come together to form a vertical meeting rail.

Inside-mount direct hinge

Must have clearance for blade rotation behind panel and square openings with even dimensions. If the dimensions are over 5 mm (3/16") in difference in width or height, use "Z" Mold or Outside-Mount Hang Strip.

Insulating Glass

Two or more pieces, lights or panes of glass separated by a hermetically sealed air space, typically 3/16 to 1 inch wide. Manufacturing of insulating glass began in 1930.

Intermediate Rail

A rail of a door located between the top and bottom rails.

Jalousie

A series of small horizontal overlapping glass slats, sections, jalousies or louvers held together by a metal end frame attached to the faces of the window frame side jambs or door stiles and rails. Also known as glass louvres.

Jamb

The top and two sides of a door or window frame that contact the door or sash.

Joint

The joining of two pieces of wood by nails, glue, adhesives, pressure fit or other means; joints may be joined end to end, edge to edge, end to edge, or end to face.

Kick plate

A thin, polished metal plate applied to the bottom rail or bottom of a door to prevent denting and soiling of the wood surface caused by the kicking action of persons opening the door; kick plates may be applied to one or both sides of a door.

Kick Rail

A rail located approximately 270 mm (10" to 12") from the bottom of a hollow-core flush doorframe, used primarily on institutional doors.

Kiln-Dried

Anything that is wood seasoned in a kiln by means of controlled artificial heat, humidity and circulation; kiln-dried wood may refer to wood with various moisture content percentages.

Knocked-Down

Unassembled, as contrasted to assembled or built-up.

Knot

A branch or limb embedded in a tree and cut through during lumber manufacturing; the size of a knot is determined by averaging its maximum length and width of the knot.

L Mould

Utilized when shutter panels need to be "projected" away from the wall or window to allow for blade clearance.

Light (also Lite)

A framed opening in a sash or door containing a pane of glass.

Light Strike

The light intrusion appearing through a gap especially a frame within an opening.

Light strip

A small strip of wood installed at the edges of the inside mounts to limit light strike "L" and "Z" Moulds have light strips built in.

Lock Block

A solid or glued block of wood the thickness of a hollow-core interior door or steel exterior door stile, which is joined to the inside edge of the stile and to which a lock is fitted.

Lock Rail

The intermediate rail of a door at lock height.

Louver

An opening with a series of horizontal profiles, called louver boards or glass, arranged sloping downward to permit ventilation but exclude rain, sunlight or vision. Louvers can be made in various shapes. See Jalousie.

Louver Door

A panel door with part or all of the panels replaced by louvers; a blind door.

Lumber

The term used for tree fell wood. The general rule in the trade is; it's called Wood while it's standing as a tree, Lumber while it's laid as a log or sawn, and Timber as it is processed into dimensioned stock.

Mid rail

The horizontal mid positioned framing member of a door. It is positioned on the dado line if possible or symmetrically placed. It should be mortice and tenon constructed as an integral part of the door as it is there for structural improvement of the frame, usually on a large frame.

Millwork

A term used to describe products that are primarily manufactured from lumber in a planing mill or woodworking plant.

Mortise, Mortise

A slot cut into a member such as a stile by way of deep rebating or chisel mortising to a depth and dimension so as to receive the partner member tenon neatly and tight enough that under pressure and applied with correct glue this joint will be one. This is the strongest joint.

Mortising (a hinge)

A rebated or recess for the hinge to attach to the door and to the frame which reduces the space between the frame and the panel. Common today are the new non-mortised style hinges that don't require mortising of the panel to reduce this space.

Moulded

Refers to something worked into a form or shape.

Moulding

A relatively narrow strip of wood, usually shaped to a curved profile throughout its length; used to accent and emphasize the ornamentation of a structure and to conceal surface or angle joints.

Mullion

A vertical wood or metal part used to structurally join two window or door units.

Newel

The main post at the start of stairs and the stiffening post at the landing.

Non-mortised Hinging

There is no groove or rebate where the hinge attaches to the frame and the panel. This is our standard-installation hinge and the simplest system for self install.

Non-rabbeted Panel

No light stop or rebate in the panels where two panels meet.

Ovolo

A convex profile; usually a quarter section of a circle, as in to the profile of quarter-round.

Outside mount hanging strip

Mounts on the wall or trim outside of the opening on each side.

Outside mount L mould

Used to project the panel out from the window to provide blade rotation clearance. Mounts on the wall, Architrave or trim outside of the opening. The L Mould is utilized on French door applications to gain clearance of the door handles.

Panel

A wood or other surface within a surrounding frame ( jamb or casing). All panels have structural frames, the interstices of which are filled with solid material or operable profiles.

Paint colors (Finishes)

We offer 3 Colours of White, a Lime Wash and Clear polyurethane or we will match any paint color to your colour chip.

Passage Door

An interior door connecting two inside rooms or used for a closet door; this door type does not have the same strength, insulation or security requirements of an exterior door. Panel construction on passage doors is designed to allow the wood to expand and contract with changes in moisture and temperature; the centre panels are allowed to float within the door's frame.

Patio Door

A door that opens onto a patio, deck or backyard of a house, usually made of glass to allow for viewing.

Picture Window

The same as a stationary or fixed sash, a picture sash or window usually implies a relatively large-sized sash.

Photovoltaic

A device that produces electricity (voltage) directly from sunlight (photons).

Planer

A machine or hand tool used to surface the timber by passing over the work piece thus reducing the thickness of that material as set by the depth of knife of the tool.

Plant on

An additional member of similar profile (but not necessarily) which is attached as an integral part of the first part to carry a certain function, dress the parent member or act as a casing trim.

Prehung Door Unit

A pre-cut and assembled unit consisting of a door with the locking or passage hardware hung on hinges.

Primer Coat

The first coat of paint in an application that consists of two or more coats.

Rabbeting

Utilized by high-quality shutter companies when opposing shutter panels meet in the center to provide a double light stop.

Rail

The rails are the structural upper and lower members of a plantation shutter panel. In quality made shutters these are jointed by mortise and tenon.

Raised Door Panel

A door panel on which the edges have been contoured or shaped to provide an aesthetically appealing, three-dimensional effect.

Replacement Window

A double-hung window that can be bought as a kit, including all needed hardware, that will replace a broken or old window, usually without disturbing the internal or external walls.

Rough Opening

The opening in a wall where a window is to be installed

R-value (also R-factor)

A measure of a product's ability to resist the transfer of thermal energy. The inverse of U-factor (R=1/U), R-value is expressed in units of hr-sq. ft -篎/Btu. A high R-value window has greater resistance to heat-flow and a higher insulating value than one with a low R-value.

Sash

A single assembly of stiles and rails in a frame for holding glass, with or without dividing bars or mullions, to fill a given opening; it may be either open or glazed or shuttered.

Sash Cord

The rope or chain attaching the sash to the counter balance in a double-hung window.

Sash Door

A door that is constructed with the bottom half made up of a wood panel and the top half made of glass to allow for a view.

Sash Lift

A handle built into the bottom rail of the lower sash on a double-hung window.

Screen Door

A door that is made with a wood panel as the bottom half and a screen for ventilation as the top half. Also called a ventilating door or combination door.

Square opening

Even dimensionally, not square in shape. To verify that the opening is square, measure diagonally across the opening from corner to corner. The measurements should be within 10 mm (3/8") of each other.

Shading coefficient

Heat entering the building through combination of glass and the Shutter Panel heat entering through single float glass (Including the effects of transmission and absorption) .

Shutters

A wood assembly of stiles and rails to form a frame that encloses panels used in conjunction with door and window frames; may also consist of vertical profiles. Shutters have been around since windows were first used. By the 16th century, interior paired shutters were used throughout Europe, often stacked in two or four tiers. They are extensively used in temperate climates as they provide both thermal control and light control. Wooden shutters can be operable or fixed blade. They can be used internally, as privacy screens, as external window coverings, patio enclosures etc.

Sidelight

An assembly of stiles and rails, with or without a wood panel, containing a single row of glass panels or lights and installed on one or both sides of an exterior door frame, especially a front entrance door frame. Also used in older houses to frame interior doors

Sill

A main horizontal member forming the bottom of the frame of a window or door.

Single Glazing

The use of single panes of glass in a window.

Single-Hung Window

Similar to a double-hung window with the top sash stationary or inoperative while the bottom sash operates freely; also, a vertical slider.

Skylight

A window installed in a roof and assuming the same slope. Depending on which direction they face, skylights can bring in more light and heat than windows. For example, in the summer months, an unshaded south-facing skylight will bring in more direct sunlight and heat than a window. In a cold climate, a north-facing skylight gives almost five times more light than a north-facing window with almost the same amount of heat loss. Light control and solar efficiency can be harnessed by incorporating skylight shutters or louvres.

Solar Heat Gain Coefficient (SHGC)

The fraction of solar radiation transmitted through a window or skylight, expressed as a percentage. The lower a window's SHGC, the less solar heat it transmits and the greater its shading ability. SHGC can be expressed in terms of the glass alone or can refer to the entire window assembly. Generally, a lower SHGC is desirable in warm climates, and a higher SHGC is desirable cold ones. SHGC has replaced shading coefficient (SC) as the standard indicator of a window's shading ability.

Solar reflectance

The measured quantity of energy in the solar wavelength range that is reflected by a window, expressed as a percentage.

Solar transmittance

The measured quantity of energy in the solar wavelength range that passes through a window, expressed as a percentage.

Softwood

One of the botanical groups of trees that has persistent needle-like or scale-like leaves most of which are the conifers; softwoods are evergreen and have longer-length fibers than hardwoods. Not all softwoods are soter than the hardwoods.

Solid-Core Flush Door

A flush door consisting of a core of solid wood blocks or strips with cross-banding and face veneers, or with face veneers only.

Solid Door Panel

A door panel consisting of solid wood, raised or bevelled on one or two sides.

Stationary Sash

A fixed or inoperative sash, often used in combination with other types of window and sash units; intended primarily for viewing purposes and for admitting light.

Stile

Stiles are the structural right and left parts of a plantation shutter panel. They house the operating mechanisms of our operable shutters .see Drawing

Stop

A moulding used to hold, position or separate window parts or to terminate a juntion of adjoining surfaces.

Storm Door

A door that is hung to cover and protect and insulate an exterior door; such as a storm rated shutter.

Sunburst

A semi-elliptical area, the lower center of which contains a sun-like figure with radiating rays; may consist of a wooden shuttersl or a glazed sash.

Tempered (Toughened) Glass>

Glass that is treated with heat in its manufacturing, creating a product that can withstand abnormal force or pressure on its surface, and which does not break into sharp pieces; code requires tempered glass in all doors (including patio doors) and on windows that are located near doors.

Tenon

The end of a rail or similar member reduced in area (usually by a rebating tool or tenoner) to neatly enter a Mortise in another member, often a stile. The width of a tenon should be approx 4 times it's thickness.

Tension system

An adjuster of the stiffness of the louver tension to eliminate free movement of louvers over occasional time.

Tilt Window

A double-hung window designed in such a way that the sashes tilt inward for easy cleaning of the outside of the glass.

Tilt bar (or Control rod)

An obsolete form of controlling the rotation of a set of louvers or shutter blades.

We have invented a Patented hidden operating cassette, which controls the accent of groups of blades without the unsightly tilt bar obstructing your view or becoming susceptible to deterioration. Light, privacy and ventilation are controlled by a one-touch action on any blade.

Tongue and Groove Joint

A joint formed by the insertion of the tongue of one wood member into the groove of the other; modifications include tongue and groove rabbet joint, dado tongue and rabbet, tongued shoulder joint, dado and rabbet joint, dado and rabbet joint, dado and lip joint.

Top Rail

The top rail of a sash, door, blind or other similar panel assembly.

"T" Mullion (or Mullion)

Used to separate multiple window installations, i.e., a triple window opening would use a Mullion where the window sections meet.

Track

Used in bi-fold and bypass installations to provide a support and guide for panels as they are moved. The track is an extruded aluminum and the carriers are nylon wheels. A matching timber Pelmut can be provided to cover the track face.

Transom

A small opening above a door or window separated by a horizontal member that usually contains a sash or a louver panel hinged to the transom bar. Transoms are also known as fan lights or high lights. They increase the amount of light let into the front hall, and also reduces the need for such a high door to suit the opening.

Trim (or Architrave)

Millwork, primarily mouldings and/or trim that finishes off window and door openings, fireplaces, walls and other members. Trim is more commonly referred to as the Architrave.

Triple Glazing

Three panes of glass with an air space between each pane to assist thermal and noise insulation.

True Divided Light

Windows that contain individual panels of glass and are assembled in the sash using mullions. Equally divided in the opening.

U-value

A number that measures the rate of heat flow through the complete heat barrier from room air to exterior air, measured as energy transmitted per square meter of window / Shutter and per degree of temperature difference.

Veneer

A thin sheet or layer of wood, usually rotary-cut, sliced or sawn from a log, butt, bolt or flitch.

Veneered Construction

A stile or rail consisting of a core, two edge strips and two face veneers bonded together under pressure with adhesives.

Ventilating Door

A door that is made with a wood panel as the bottom half and a screen for ventilation as the top half. Also called a combination door.

Vertical Light

A light or cutout formed by a vertical bar extending from rail to rail of a sash or door.

Warp

Any distortion in the plane of a door itself and not in its relationship to the frame or jamb into which it is hung.

Water-Repellent Preservatives

A formulation of chemical which retards the absorption of liquid water and which inhibits decay and stain in wood. It is commonly used on wood window components.

Weatherstrip

Variously shaped metal, vinyl, plastic or moulded fibre strips that fit tightly against the sash or doorframe parts to prevent air infiltration through cracks. Cold air entering the house in winter can account for up to 35% of the heating load. Weather-stripping can reduce the load to 20%.

Window Casing

May be interior or exterior; an exterior window casing is most commonly installed on window frames for wood facing wood frame exterior walls; along with the blind stop, it forms the rabbet for the storm sash or screen.

Window Frame

A group of wood parts machined and assembled to form an enclosure and support for a window or sash.

Window Jamb

The part of the window frame that surrounds and contacts the window or sash that the frame is intended to support.

Windows

A wall opening in a building added for the purpose of letting in light and air, usually sealed from the elements in some way, using a frame and sash containing glass or another type of transparent material, and usually able to be opened and shut.

Window Unit

A combination of the frame, window, weather-stripping, sash activation device and, at the option of the manufacturer, screens and/or storm sash assembled as a complete and properly operating unit.

Wood Composite

A wood-based compound utilizing wood fibres, reconstituted wood or other wood derivative. This material is used to make moulded wood fibre interior and exterior door skins mostly to suit interior doors.

Z Mould

Used for inside opening mounts where the opening dimensions are uneven or in some cases the opening is slightly too wide. The "Z" Mold allows the frame to be installed in the opening square and even. The panels are square and need a consistent opening to fit properly.

ZTA

Heat entering the building through combination of glass and the Shutter Panel as a fraction of the total solar heat hitting the window (Including the effects of transmission and absorption)