These Corterra® Solid Surface Shower Bases are attractive, easy to maintain, spacious shower receptacles with non-slip floor. The shower base surface was tested and found to be compliant to ASTM F 462-79 (R-2007) entitled, “Standard Consumer Safety Specification for Slip-Resistant Bathing Facilities.”Construction shall be of Acorn's Corterra™ cast polyester resin with integral tiling flanges. Corterra recycled solid-surface polymer resin and is ICPA SS-1 approved. Corterra uses a minimum of 15% post-consumer recycled material and a minimum 5% rapidly renewable material derived from bio-based sources. Many colors choices are available.ADA versions are also available.