Zurn’s dura-coated cast-iron universal membrane clamp fits bolt center radii of most common roof drain bodies 10"-15" in diameter. It is 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.

• Dura-Coated cast iron clamp device with integral gravel guard
• Fits bolt center radii of most common roof drain bodies 10"-15" in diameter
• Comes complete with mounting hardware and Toughnutz bolts
• Great for retrofit applications
• 1-year limited warranty
• Dura-Coated cast iron clamp device with integral gravel guard
• Fits bolt center radii of most common roof drain bodies 10"-15" in diameter
• Complete with mounting hardware and Toughnutz bolts