Extended Sink Disposal Flange They don't dominate a kitchen like a massive refrigerator. They don't feature elaborate control panels like a microwave oven. But InSinkErator food waste disposers take their rightful place of honor in kitchens around the world. Day after day, perhaps more often than any other appliance, they bring convenience and practicality to everyone in the home. Accommodates sinks up to 1 3/4 inches thick. 2-1/2"(H) Fits into 3-1/2" drain holes.