Frank Pattern 850-006 Membrane Clamp:
- The Frank Pattern membrane clamp is bolted to the roof drain body.
- It is designed to create a water tight seal by compressing the roof membrane between the drain bowl and the membrane clamp.
- This clamping ring is used on the 850-series of roof drains, including the bottom outlet, side outlet and combination roof drain and overflow.
- 100% cast iron construction with a corrosion resistant costing.
Outside Diameter: 8″-in.