NJ Replacement Windows - New Jersey Window Types

Half Screen ? A screen which does not cover the entire opening of a window. Used on the bottom half of a window or on the operating side of a slider.

Head - The horizontal top portion of the main frame.

Head Board ? A flat board cut to fit the contour of a bay or bow window and used to affix the top of the window units.

Head Expander - A vinyl shape cut the width of a product and placed on the head, fitting over it tightly. This piece is used as a filler to expand or lengthen the unit from the head and take up the gap in the opening between the unit and the opening in the unit.

Heat Mirror ? A thin transparent insulating film that is inserted between double glazing which permits transmission of visible light but reflects far-infrared radiation.

Heat Transfer Coefficient (U-Value) ? The value indicating the rate of heat flow through a building construction, expressed in units of ?Btu/h per square foot of surface per degree F. Difference between indoor and outdoor air temperature.? This is numerically equal to the ?inverse of the sum o r-values? for the construction.

Hinge ? A movable joint enabling a window or door to swing open.

Hopper - Known as a basement windows. A window with a bottom-hinged sash that opens inward for ventilation.

Hung Window ? Windows with one or more hanging sashes.