Retrofit Thru-Wall Scupper Drain, Aluminum - OMG RETROFIT ALUMINUM THRU-WALL SCUPPER DRAIN, 9 INCH LONG DRAIN STEM. PRICE/EACH. (select outlet size before adding to cart)
Retrofit Thru-Wall Scupper Drain, Aluminum
$450.00 SALE $346.99
(Savings: $103.01)
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OMG Retrofit Aluminum Thru-Wall Scupper Drain, 9 inch Drain Stem. Price/Each. (select outlet size before adding to cart)

Ordering Notes:

  • Shipping leadtime: 1-2 business days.


Designed for existing through-wall/side-wall or scupper drainage pipes, the aluminum & stainless steel drain components provide durability and compatibility with Single Ply, BUR & Modified Bitumen roofing systems. A metal clamping assembly creates a compression type termination in both vertical and horizontal wall flashings. A removable drain strainer catches debris. The patented RAC Backflow Compression Seal for a proven plumbing connection with existing PVC or Cast Iron leader pipes. This drain features an extra large flange for positive attachment.


  • Pre-punched 0.080 inch thick with a large 16 inch wide x 10 inch x 10 inch aluminum drain flange.
  • 0.060 inch thick aluminum drain strainer.
  • 9 inch long drain stem.
  • Includes a 0.125 inch thick, aluminum clamping ring.
  • Incorporates the patented RAC Backflow Compression Seal.
  • Simple and easy to install.


  • OlyFlow RetroDrains are designed to replace existing drains in reroofing applications. Installed from the roof surface, the OlyFlow RetroDrains are engineered to be installed without removing the existing plumbing or fixture while providing a watertight connection to the roof system and the existing plumbing.


  • Also available in 3 inch, 4 inch, 5 inch and 6 inch outlet sizes.



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Call us at 1-800-474-7570 or 602-272-8128
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  Associated Items:  
Drain Strainer / Cover, Aluminum, 8.25x8.25
OMG STR-TW Relacement Drain Strainer. Fits OMG Thru-Wall Scupper Drain. 8-1/4 x 8-1/4 inch Size. Strainer only, no clamp. Price/Each. (shipping leadtime 2-3 business days)
$121.00 $94.35
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