Produced from High-Grade, Compression Molded Fiberglass for Optimum Strength; Fits 60 Inch Wide by 30 Inch Deep Alcove; Drain Hole is Offset 8-1/2 Inch x 15 Inch for Connection to 2 Inch DWV Piping; Smooth, Semi-Gloss Finish. Slip Resistant Surface; Mold and Mildew Resistant Easy to Clean; Fits Durawall Shower Walls as Well as CeramicTile or Preformed Wall Kit; Made in USA 12" x 60", White, Molded Fiberglass, Entry Ramp for Shower Floor