VGU1153 Features: * Shower base features a double threshold, textured bottom for added safety * Durable cross-linked cast acrylic shell is extremely scratch and stain resistant, yet renewable * Non-porous surface makes cleaning and sanitizing faster and more effective * Multi-layered backing of thick fiberglass / resin encloses wood reinforcement to prevent flexing of floor pan * At least 30% thicker and stronger than other makes * Pre-leveled with integral tile flange on 2 sides to facilitate installation * Textured bottom for extra safety Construction: * Constructed of acrylic with fiberglass reinforcement