Abstract: A construction product such as a window or door includes a multi-functional thermal break. The thermal break serves to contact and support elements of the frame of the construction product. The thermal break also provides one or more additional structural functions for the construction product.

Abstract: A construction product such as a window or door includes a multi-functional thermal break. The thermal break serves to contact and support elements of the sash of the construction product. The thermal break also provides one or more additional structural functions for the construction product.

Abstract: A pair of rectangular sash, framing glass panes for normally closing an opening in a wall, overlap each other at one end, with one sash slidable horizontally relative to the other to open said opening. Each overlapping end includes a vertical sash rail provided with horizontally spaced inner and outer vertical flanges extending toward the opposite end of the sash that carries those flanges, with all of the flanges disposed between the rails. The inner flanges of the two rails are spaced apart and located between the outer flanges in overlapping engagement with them to interlock the two rails. Disposed in the space between the inner flanges is a pair of vertical weather-sealing strips, each of which is connected to a sash. The strips extend toward each other and into contact to form a weather seal between the rails.

Abstract: A pair of sliding window sashes have overlapping ends, each of which includes a vertical sash rail to which a vertical metal bar is joined between the rail and the other sash. Each bar has a pair of vertical slots in it separated by a vertical flange and facing the opposite end of the sash that carries the bar with the outer side wall of the outer slot forming a tongue extending into the outer slot in the other bar to interlock the two bars while the window is closed. The inner side wall of each groove extends outwardly beyond that groove toward the opposite end of the sash to form a vertical flange. A vertical sealing weather strip is connected to the side of each bar opposite its slots and engages the flange on the other bar to form a seal.