Expanded metal is a type of sheet metal which has been cut and stretched to form a regular pattern of mesh-like material. It is commonly used for fences and grates, and as metallic lath to support plaster or stucco.

A lath or slat is a thin, narrow strip of straight-grained wood used under roof shingles or tiles, on lath and plaster walls and ceilings to hold plaster, and in lattice and trellis work.