Glass block

Glass block

Composed of two sheets of plate glass with an air space between them, formed into a sealed modular hollow block; laid up with mortar, similar to masonry blocks as a modular material; comes in several distinct styles, patterns and degrees of transparency and translucency.

glass block, glass brick

A hollow block of glass, usually translucent with textured faces; has relatively low thermal-insulation and low fire-resistance value; used in non-load-bearing walls.