Topp-Dec is a moulded shower floor with a built in gradient of approximately 2 degrees. It simply slots into the existing floor to produce a perfectly formed shower area: saving time and providing consistent and perfect water drainage. Simply select the Topp-Dec size that best suits your needs. The Topp-Dec comes complete with a gravity drainage gully offering a safe and predictable removal of waste shower water. It has a 50mm water seal and stylish stainless steel cover.