Separate from the masterframe, the portion of the window that contains the glass.

A feature that allows a window to be safely raised to a certain height.

Running a utility knife blade, a sharpened awl, scoring tool, or other sharp implement across a soffit or siding panel face without cutting all the way through the panel. This weakens the vinyl surface in a specific area and allows the panel to be bent and broken off cleanly.

The horizontal, bottom section of the masterframe.

A combination of fixed and sliding glass door panels that operate solid brass roller trucks. Available in 2-, 3- or 4- lite configurations with the operable panel available in any position.

A window in which the sashes move horizontally. Available in a 2- or 3-lite configurations.

Material used to enclose the horizontal underside of an eave, cornice, or overhang. Some soffit panels may also be used as vertical siding.

The fraction of solar radiation admitted through a window or skylight, both directly transmitted and absorbed and subsequently released inward. The solar heat gain coefficient has replaced the shading coefficient as the standard indicator of a window’s shading ability. It is expressed as a number between 0 and 1. The lower a window’s solar heat gain coefficient, 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.

An object placed between two or more pieces of glass which helps to maintain a uniform width between the glass, and prevent sealant distortion.

A measurement of siding. One square equals 100 square feet (10 x 10 wall).

A solid silicone foam spacer covered with Mylar. It is sealed to the edge of the glass and then sealed with butyl for greater energy efficiency.

An accessory applied directly to the surface of the building and used to secure the first course of siding to the home.

A flexible framing material used to even a surface prior to installation.