STERLING 71370116-0 Ensemble Medley, Series 7137, 60-Inch x 30-Inch x 73-Inch Bath/Shower with Age in Place Backers and Left-Hand Drain, White Made of solid Vikrell material for strength, durability and lasting beauty Caulk-free, making installation a snap and reducing the need for long-term maintenance Innovative Dry-Block(TM) seal and channeled water containment system form watertight seams Modular design allows it to be moved around corners and through doorways with ease Tongued-and-grooved interlocking joints form a seamless appearance and simply installation