Glossary L

Lattice-

Originally used in trellis work, this small plain, S4S moulding is among the most versatile of profiles.

Light (also Lite)-

A framed opening in a sash or door containing a pane of glass.

Lineal Foot-

Having length only; used in designating quantities of mouldings; "linear," "foot," or "running foot;" "lineal" usually designates non-specific or random lengths, 3-20 feet or 6-20 feet.

Lock Block-

A solid or glued block of wood the thickness of a hollow-core interior door or steel exterior door stile, which is joined to the inside edge of the stile and to which a lock is fitted.

Lock Rail-

The intermediate rail of a door at lock height.

Louver-

An opening with a series of horizontal slats, called louver boards, arranged sloping downward to permit ventilation but exclude rain, sunlight or vision. Louvers can be made in various shapes.

Low-Emissivity (Low-E) Glass-

A special type of glass having a transparent material fused into its surface that acts as a thermal mirror. Use of heat-resistant (or absorbing) glass began in the 1950s, as did the use of reflective (or mirror) glass.