Jay R. Smith Mfg. Co. – 1330 Roof Drain, 8.5" Cast Iron Dome Assembly

The Jay R. Smith 1330 Roof Drain is an 8.5-inch dome drain designed for flat and low-slope commercial and industrial roofing systems. Constructed with a cast iron body and asphaltic coating, it delivers long-lasting durability and corrosion resistance. Its low-profile dome strainer ensures reliable water flow while blocking leaves, gravel, and debris from entering the drain line, helping to prevent clogs and ponding on the roof surface.

• Manufacturer: Jay R. Smith Mfg. Co.
• Model: 1330 Roof Drain (8.5″ diameter dome)
• Body Material: Cast iron with Duco/asphaltic coating
• Dome Options: Polyethylene, Cast Iron (CID), Aluminum (AD)
• Free Flow Area: Approx. 55–60 sq in (based on dome size)
• Outlet Sizes: 2″ through 4″ (Caulk, No-Hub, Threaded)
• Deck Opening Recommendation:
  • ~9.5″ diameter with sump receiver
  • ~8″ diameter without sump receiver
• Approximate Weight (Complete Assembly): 10–18 lb depending on dome and outlet configuration