Multiple threshold shower base with low-profile, narrow threshold and shallow pan. Built of durable Lucite cast acrylic, and reinforced with multi-layered backing of thick fiberglass / resin / titanium that encloses wood reinforcement to prevent flexing of the floor pan. At least 30% stronger than other makes. Standard with textured bottom that meets ASTM-F-462-1994 certification requirements. Shown with teak shower tray and Teutonic Series glass shower enclosure.