Marathon Roofing Products Inc.
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Roof Drains, Vents, Accessories And Pedestal Supports
Marathon Roofing Products Inc. > PRODUCT > RD-700 Dual Overflow
RD-700 Dual Overflow

RD-700 epoxy coated cast iron dual outlet roof drain/overflow combination with flashing clamp, integral gravel stop, 2 in. high internal overflow standpipe, secured ductile iron dome, and no hub outlets. Constructed to withstand climate and the rigors of long-term use.


  • Flashing clamps with integral gravel stop and overflow standpipe for reliable drainage and overflow
  • Secured ductile iron dome is engineered to last
  • No hub outlets for easy installation
  • Engineered with cast iron for long life and durability


  • Underdeck clamp
  • Deck flange/Adj. extension
  • Aluminum strainer
  • Vandal proof strainer
  • 4" high overflow
  • Available in 3", 4" and 6"

RD-700 Dual Overflow Data Sheet

Direct Connect Product Brochure

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CAD Detail Files for RD-700 Dual Overflow

RD-700 Dual Overflow
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Specifications for RD-700 Dual Overflow

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