Designed for use with preformed shower stall bases. Use for slab construction. Sealed to the shower base with a fiber and rubber washer. 2" Schedule 40 DWV pipe is secured with a mechanically compressed gasket that does not require caulking. Drain accommodates 4-1/4" Universal snap-tite strainer. Can be used with 1-1/2" schedule 40 DWV pipe and 1-1/2" or 2" copper DWV pipe when caulking gasket is replaced. SKU NO. 222.9979 with stainless steel strainer. SKU NO. 643.2991 with white plastic strainer.