US Patent 6990695 Shower pan

A shower pan for mounting in a shower stall includes a single integrally molded base with a drain hole. A sidewall extends upwardly from the base and completely surrounds the base. A lateral ledge extends outwardly from the sidewall and has an inner edge and an outer edge defining a surface therebetween for mounting a shower stall door track. An outer ridge extends upwardly from the outer edge of the lateral ledge and is in spaced apart relation to the door track. Water flowing through cracks between the door track and the shower pan is prevented from escaping the shower pan by the outer ridge, which allows water to drain under the door track into the shower pan.