pella windows and doors stuff

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Astragal

The center member of a double door, which is attached to the fixed or inactive door panel.

Awning window

A window unit in which the bottom of the sash swings outward.

Bay window

A composite of three windows, usually made up of a large center unit and two flanking units at 30- or 45-degree angles (custom angles available) to the wall.

Bow window

A composite of four or more window units in a radial or bow formation.

Brickmold

A type of external casing which frames windows and doors.

Casement window

A window unit in which the single sash typically cranks outward, to the right or left. May also be in a fixed form but with a removable sash.

Casing

Molding of various widths, thickness and shapes applied to the framework of window and door units.

Check rail

On a double-hung window, the bottom rail of the upper sash and the upper rail of the lower sash, where the lock is mounted.

Circlehead

A generic term referring to any of a variety of window units with one or more curved frame members, often used over another window or door opening.

Cladding

An aluminum material locked to the outside faces of many Pella products to provide a durable, low-maintenance exterior surface.

Cottage double-hung

A double-hung window in which the upper sash is shorter than the lower sash.

Double-hung window

A window unit that has two operable sashes which move vertically in the frame.

Dual durometer

A material that has two or more levels of flexibility. An example is the weatherstripping used between the frame and sash of a Pella casement window.

Extrusion

A form produced by forcing material through a die. Pella window and door frames are clad with extruded aluminum.

Fenestration

An architectural term referring to the arrangement of windows in a wall. From the Latin word, “fenestra,” meaning window.

Fixed

non venting or non-operable

Flashing

A thin strip of metal or synthetic material that diverts water away from a window or skylight.

Foam Spacer

Foam material placed in the airspace of the insulating glass in Pella windows to enhance the appearance and improve the performance of the window.

Frame

The enclosure in which window sash or door panels are mounted

French Sliding Door

A sliding door which has wider panel members around the glass, giving the appearance of a French hinged door

GBG

Grilles between the glass

Glazing

glass in a window or door; the act or process of fitting with glass

Glazing stop

The part of the sash or door panel that holds the glass

Grille

A term referring to windowpane dividers or muntins, usually a type of assembly which may be detached for cleaning.

Head

The main horizontal member forming the top of the window or door frame.

Header

A horizontal framing member placed over the rough opening of a window to prevent the weight of wall or roof from resting on the window frame.

Hopper

A window unit in which the top of the sash swings inward or outward with hinging at the bottom.

Insulating glass (IG)

A combination of two or more panes of glass with a hermetically sealed air space between the panes of glass. This space may or may not be filled with an inert gas, such as argon.

Integral Light TechnologyTM

Patented technology used in Pella Architect Series® products in which foam spacers are inserted between the panes of insulating glass.

Jamb

The main vertical members forming the sides of a window or door frame.

Jamb liner

In a modern double-hung window, the track installed inside the jambs on which the window sashes slide.

Mortise

A slot or rectangular cavity cut into a piece of wood to receive another part.

Mullion