The McAlpine STW85SSM is a mushroom flange designed for use with McAlpine STW 1½" shower traps. It covers the waste outlet for a neat finish. Made from high-quality stainless steel, it ensures durability and resistance to corrosion. The mushroom design makes it easy to clean and maintain. Proper alignment during installation prevents leaks and water damage. This reliable and stylish accessory provides a professional finish to any shower installation. Available in White Plastic or Chrome Plated Stainless Steel, and in 70 or 85mm sizes.