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

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

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.

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

The concealed cast-iron weight used to counterbalance the sash in double-hung windows.

A deep concave moulding more than 1/4 round in sections; reverse of torus; cove moulding.

A S4S moulding originally used in the construction of screens.  Used extensively in cabinet work and finished carpentry where a clear strip is required.  Many times referred to as S4S stock.

Mouldings or jambs sold as a unit or two sides and a header, usually for installation around a door opening.

Relative measurement of the total amount of solar energy that enters a building space through the glass, compared with 3mm single clear glass.

A moulding commonly used in closets to support the shelves, also shelf strip.

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

A hinged cover or screen for a window, usually fitted with louvers

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.

The horizontal member forming the bottom of a window or exterior door frame; as applied in general to construction, the lowest member of the frame of a structure, resting on the foundation and supporting the frame.

A method of constructing windows in which muntins are affixed to the inside and outside of a panel of insulating glass to simulate the look of true divided light.

The use of single panes of glass in a window.

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

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.

The surface is machined by fine saw work.

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 un-shaded 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.

Softwoods are one of the botanical groups of trees that have persistent needle-like or scale-like leaves.  Most softwoods are evergreens.

Non-finger-jointed mouldings; solid length.

Mouldings sold and shipped in lengths specified by the customer such as all "7 and/or 14-feet," "8 and/or 16-feet," "all 8-feet, " etc.

The interior corner of a moulding "beveled off" to better fit a right angle joint; in contrast to non-sprung or plain moulding.

A discoloration of the wood.  Brown stain is due to a chemical reaction occurring in the drying of some species.  Blue stain is cause by the growth of mould like fungi on the surface or in the interior of the wood prior to the time the wood is dry.  The stain does not effect the strength of the wood, and the growth of the fungi stops once the wood is dry.  Stain, in grading rules is defined as light, medium, and heavy.  Light stain is so slight that it does not effect the appearance for natural finishes.  Heavy stain is permitted only in paint grades.

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.

A woodworking machine designed to run mouldings and other wood members with regular or irregular profiles.

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

A patio door of two or three sections, one of which swings inward or outward like a regular door, with the other sections fixed.

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