Mapeguard Pre-Formed Shower Tray The Mapeguard Pre-Formed Shower Tray offers a fast and reliable solution for shower base installations. Pre-sloped and lightweight, it features a bonded waterproofing membrane over high-density EPS foam, making it both durable and waterproof, and ready to tile right out of the box. Features Pre-sloped 1/4" per foot to ensure proper drainage Constructed from high-density expanded polystyrene (EPS) Integrated waterproof membrane exceeds ANSI A118.10 standards Lightweight, rigid, and easy to handle Resists mold and mildew Available in multiple sizes and can be cut for custom fits Compatible with Mapeguard Drain systems (sold separately) Suitable for residential and commercial tile or stone showers