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Adjustable Extension Compression Seal Roof Drain

The patent-pending RD-300-AC roof drain with its highly reliable compression seal helps significantly reduce the risk of leakage and water damage, problems often experienced with other roof drains. Its creative design supports flexible height adjustment from 1" to 3-1/4". The epoxy-coated cast iron roof drain has a flashing clamp and integral gravel stop, self-locking polyethylene dome (standard), and no hub (standard) outlet.


  • No threads to rust
  • Reliable, watertight, leak-free seal protects against leaks
  • Compression seal technology provides the flexibility needed for adjusting to the correct finished height
  • 2" to 10" outlet sizes support different drain requirements
Series Specifications
Application Adjustable Extension Roof Drains

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific RD-300-AC

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: