Universal Replacement Dome and Collar Assembly
Designed for retrofit or replacement on existing roof drains, the bolting lugs of this dome and collar assembly match the bolt patterns of most common 15" (381) and 16" (406) diam. roof drain bodies with bolt circles of diameters between 7-1/4” (185) and 10-3/4” (275). The Duco coated cast iron collar generally conforms to the surface angle of the existing drain’s flange allowing adequate pressure on waterproofing membranes to ensure watertight installation. (It is recommended that roof membranes are extended into the drain’s sump.) The collar is topped by a corrosion proof polyethylene dome strainer. Mounting hardware is included.
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