Strike A metal part with a hole or recess for receiving a door latch. It has a curved or ramped face so that a spring-loaded latch contacts it when closing. Strikes are fit into mortises in doorjambs or mullions, and screw-fastened.
Tempered Glass A glass sheet, which has been strengthened by heat processing.
Threshold Another term for sill. The horizontal part of a door assembly, fixed under the door panel and bearing on the floor.
Triple-Glazed An insulated glass assembly made of three thicknesses of glass, with air spaces between the outer and inner thicknesses.
Veneer A thin film or facing, adhesively bonded to a core or substrate, which makes up the exposed and decorative face of an assembly.
Wired Glass Glass made for use in fire doors, which has embedded wires which bind the glass, and permit the glass to remain solid when exposed to fire.