The Heavy Duty TPO RetroDrain has a one-piece spun aluminum body and a TPO coated flange for hot air welding directly to TPO roof membranes. The drain flange has a depressed sump area for improved flow and to facilitate drainage. The TRI-BUILT® TPO Retro Drain is equipped with a heavy duty cast aluminum strainer dome for strength and durability, and incorporates U-Flow® Seal technology, providing a mechanical watertight connection to PVC or cast iron pipes.

TRI-BUILT® provides quality residential and commercial building materials that deliver professional results. By focusing on the professional contractor, TRI-BUILT® has become a recognized and trusted leader in the construction industry. From roofing and siding materials, windows, coatings, and more, TRI-BUILT® is a name you can trust at a competitive price.