Frank Pattern Membrane Clamp

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.

Bolt-to-Bolt  5-1/2″-in.