Zurn RD2190 Universal Membrane Clamp Only

Dura-coated cast iron clamp device with internal gravel guard. Complete with mounting hardware. Designed for retrofit roof applications where the existing main roof drain is to be utilized. The tie-down lugs of the collar match the bolt pattern of the more common roof drain bodies and conform to the surface angles of the flange, allowing timely replacement along with desirable surface pressure on the membrane clamp device.