Wonderboard from Custom Building Products
A 1/2” glass-mesh reinforced cementboard composed of Portland cement, aggregates and reinforcements. Significant ability to remain unaffected by prolonged exposure to moisture. Not to be used as a structural load bearing member.

Durock from USG Corp.
1/2” cementboard of varying widths and lengths made of aggregated Portland cement with a coated glass-mesh reinforced scrim. Highly fire-resistant. Exceeds the ANSI standards for cementitious backer units and for noncombustibility.

Hardibacker
1/4” proprietary cement formulation from Portland cement, ground sand, cellulose fiber and additives. No formaldehyde. Non-combustible. Complies with ANSI A118.9 standards for cementitious backer units. For interior walls and floors.