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RD-250 Watts

One-Piece Combination Roof Drain & Secondary Overflow

Series RD-250 cast iron combination roof drain/overflow with deck flange, drain body, flashing clamp with integral gravel guard, overflow standpipe with membrane clamp, self locking cast iron dome, and no hub outlets.


  • Deck flange, flashing clamp, and overflow standpipe with membrane clamp ensure reliable drainage
  • Drain body and self-locking cast iron dome are built to last
  • Engineered with cast iron for long life and durability
  • No hub outlet for easy installation

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific RD-250