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RD-300-W Watts

Overflow Roof Drain with 4 in. Internal Water Dam

Series RD-300-W epoxy coated cast iron overflow roof drain with flashing clamp with integral 4 in (102mm) high internal standpipe, self-locking polyethylene dome (standard), and no hub (standard) outlet.


  • Flashing clamps with integral internal water dam and standpipe help ensure reliable drainage and overflow
  • Engineered with cast iron for long life and durability
  • Self-locking polyethylene dome (standard) and no hub (standard) outlet simplify installation and maintenance

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Approval Information

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