Glossary of Window Grille Terms

Glossary

 A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

 

A

Angle Window

A window with an angle other than 90-degrees on one or more sides.
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Awning Window

An operating window that opens outward on the horizontal plane using a hand-operated crank.
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C

Casement Window

An operating window that opens outward on the vertical plane using a hand-operated crank.
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Chord Window

A fixed 180-degree radius window, similar to a half round, where the height is not equal to half the distance of the width.
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Closed Hub

A closed hub is a solid piece of 180-degree radius material, wood or aluminum, usually positioned at the bottom center of a window.
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Concealed Clips

Metal clips that insert between the glass and the window casing and reveal a tension-mount clip designed to receive the surround profile of a full surround grille.  The clips are completely concealed from view once the grille is installed.  Concealed clips are only available for full surround grilles.  The proper clip will be provided based on the surround profile chosen.
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Craftsman Pattern

A craftsman pattern features a rectangular grille only in the top portion of the window. 
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D

Dado

A precision machined notch and counter notch that allows two grille bars to intersect with one another.
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Daylight Opening (DLO) Measurement

The measurement of the visible glass, from stop to stop.
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Diamond Pattern

A diamond pattern features divided lites that form diamond shapes. 
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Direct Set Window

A fixed window where the glass is glazed directly into the frame.
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Divided Lite

Divided lite refers to the individual panes formed by the intersection of the grille bars.  Lites can be square, rectangular, diamond, sunburst, or radius shaped.
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Double Hung Window

A window with two sashes, one on top of the other, where both sashes move.
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Double-Sided Tape

Double-sided tape is gray in color and is used to apply Simulated Divided Lite (SDL) grilles directly to the glass.  Use of this product provides a permanent adhesion that is not removable.  The double-sided tape is pre-applied to the grille bars.  Glass must be cleaned prior to grille bar application per the glass cleaning instructions (provided with your grille order) to ensure proper adhesion.
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Dual Lock

3M™ Dual Lock™ is a low profile transparent pressure sensitive adhesive fastener.  One small pre-cut piece of this material is applied at the ends of each grille and to the glass.  The transparent mushroom-like heads interlock to secure the grille.  The grille will then sit approximately 1/16" off the glass surface.  Individually the tabs measure 5/8" x ½".
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E

Ellipse Window

A fixed window with a non-symmetrical bowed arch across the top.
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Elongated Octagon Window

An angled window with eight sides, where two sides are longer.
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Endwork

On non-surround grilles, the condition of the end of the bars.  Standard endwork is 90-degrees.  Other angles and profiles are available on request.
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Equal Arch Window

A window with a radius arch on the top and two equal sides (legs), left and right.
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F

Fastener

The means by which the assembled grille is affixed to the window.
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Finish

In wood, the painting, staining, or clear coat that is applied to grille bars.  In aluminum, the paint, color and grade, applied to the grille bars.
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Frame (Window)

The setting that is installed into the wall that receives and holds the sash.
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Full Circle Window

A window with a 360-degree radius.
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G

Glazing Bead

The portion of the window sash that holds the glass in place.  Also know as a stop.
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Gothic Pattern

A gothic pattern includes radius (curved) grille bars configured to form gothic lites.  The term "gothic" can be likened to a medieval or church-style pattern.
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Gothic Window

A fixed window with two curved sides that meet at the top of their arcs.
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Grille Bar Profile

The grille bar profile refers to the sculpted shape and size of the individual pieces of wood, or grille bars, that make up the grille assembly.  Profiles are categorized by width (i.e., the flat side of the grille bar profile that touches the glass).  Grille bar profiles come in a variety of width ranging from 5/8" wide up to 2" wide.  View our available grille bar profiles.
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Grille Pattern

Refers to the design the grille bars make when assembled.  Also known as Lite Configuration.
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H

Half Dado

A precision machined notch and counter notch that allows two grille bars to intersect with one another to form a "T" connection.  Used in craftsman pattern grilles.
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Half Round Window

A fixed 180-degree radius window, where the height is equal to half the distance of the width.
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L

Lite Configuration

Refers to the design the grille bars make when assembled.  Also known as Grille Pattern.
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Lock Location

Refers to where the lock keeper is located.  For most people, this would be the top sash.

Lock -location
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N

Non-Surround Grille

A non-surround grille is a grille assembly that does not have a perimeter frame (surround).  All non-surround grilles have exposed ends that are pre-cut at a 90-degree angle.
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O

Octagon Window

An angled window with eight equal sides.
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Open Hub

A 180-degree radius piece of grille bar, wood or aluminum, that is usually positioned at the bottom center of the window and is open in the center.
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Oval/Circle Pattern

An oval/circle pattern consists of radius (curved) grille bars that form an oval or circle, usually in the center of the window, with straight bars radiating from it.  It can also be used to describe any grille pattern with an oval or circle shape incorporated.
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Oval Window

A window with a rounded and slightly elongated shape, similar to an egg.
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P

Picture Window

A fixed window that is situated between two operating windows.
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Prairie Pattern

A prairie pattern, sometimes referred to as a "Queen Anne" pattern, features four small square divided lites in the corner of the window with a larger lite in the center of the pattern.  Corner lite measurements are added by you in Step #5 (Grille Pattern).  A 4-1/2" x 4-1/2" corner dimension is typical.
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Primed

In wood, a white base coat applied to promote the adhesion of paint.  In aluminum, a green-colored base coat applied to promote the adhesion of paint.
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Push Pins and Grommets

Push pins and grommets are a fastening system that can only be used when the grille type selected has a full surround frame.  Grommets are pre-drilled and installed into the surround perimeter at the factory.  The push pins fit through the grommets, and the grille is secured by pushing the pins into the window sash.
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Q

Queen Anne Pattern

See Prairie Pattern.
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R

Radius Window

A window with an arc along one side, usually the top.  Radius windows include half round, chord, ellipse, equal arch, etc.
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Rectangular Pattern

A rectangular pattern features divided lites that form either perfect squares or rectangles.
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S

Sash

The framed part of the window which holds the sheet(s) of glass in place.
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Sash Depth Measurement

The measurement from the glass surface to the outermost portion of the sash face.  Read more»

sash-depth-150
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Simulated Divided Lite (SDL) Grille

An SDL grille does not have a perimeter profile around it. It attaches to your window using double-sided tape. SDL grilles are available in wood and aluminum, and are not removable. The window must be properly cleaned per the instructions sent with the grilles in order to achieve proper adhesion. If SDL grilles are only applied on one side of the glass, the tape is visible on the opposite side. SDL grilles are available either assembled or unassembled.
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Single Hung Window

A window with two sashes, one on top of the other, where one sash moves.
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Slide Pin

A slide pin is a winged, "I" shaped piece of plastic with a ½" pin protruding from one side.  Slide pins travel in channels that are pre-cut into the ends of each grille bar.  The pin is pushed into the window sash to secure the grille.  Slide pins are only used with non-surround wood grilles.
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Slider Window

A window with two sashes, one next to the other, where one or both sashes move.
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Sliding Door

A door that operates by one sash passing the other, usually on a track.
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Spiderweb Pattern

A spiderweb pattern contains an oval or circle lite in the center, straight bars radiating from it, and radius (curved) bars between the spokes on the outer edges of the grille to create a look that resembles a spider's web.
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Spokes to Center Pattern

The spokes to center pattern features straight grille bars radiating from the center point of the window, resembling a fan.
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Spokes to Closed Hub Pattern

The spokes to closed hub pattern features straight grille bars radiating from a closed hub positioned at the bottom center point of the window, resembling the sun's rays.  Also known as a sunburst pattern.
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Spokes to Open Hub Pattern

The spokes to open hub pattern features straight grille bars radiating from an open 180-degree radius bar positioned at the bottom center point of the window, resembling the sun's rays.
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Stop

The portion of the window sash that holds the glass in place.  Also known as glazing bead.
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Sunburst Pattern

The sunburst pattern features straight grille bars radiating from a closed hub positioned at the bottom center point of the window, resembling the sun's rays.  Also known as a spokes to closed hub pattern.
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Surround Grille

A surround grille includes an outer frame, or perimeter, that is milled to overlay the window frame at the point where the glass meets the frame, giving the window and grille an all-in-one appearance.  Surround grilles are factory assembled and must be shipped in specially-built boxes to protect the product during transit.
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Surround Profile

The surround profile refers to the sculpted size and shape of an individual piece of wood that is used as the perimeter (frame) for a grille.  Profiles are categorized by width and height with varied sculpting to fit against the sash and give your window a complete, custom look.  View our available surround profiles.
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Swinging Door

A door that operates by pivoting on a hinge, either inward or outward.
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T

Tip-To-Tip Measurement

The measurement of the longest points on the top portion of the grille bar (the portion that faces outward from the glass.
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Topcoat (White)

A primer base and finish coat applied to wood grilles.  Not intended for outdoor applications.
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Transom Window

A fixed window that is situated above other operating windows or doors.
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U

Underneath Measurement

The measurement of the shortest part of the grille assembly where the flat part of the grille touches the glass.
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Unequal Arch Window

A window with a radius arch on the top and two unequal sides (legs), left and right.
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