Prices are subject to change.

Josam 418 Drain Ring




Replacement cast iron drain ring that can be used with the Josam 418 Cast Iron Dome. The drain ring may be used with post clamps or bolts.
This is a 4 bolt ring with both Pads and Slots. It fits mots Josam 8"+ outlet bowls that uses either Post Clamps or regular bolts..


  • Outside diameter: 17-1/2"-in. [O.D. of gravel stop is 17-1/8"-in.] 
  • Bolt-to-Bolt: 14-1/4"-in. (pads), 13-1/4"-in. (slots) at 180 degrees.
  • Casting#: 010800T

For instructions on how to measure for a replacement drain ring, visit our resource page, How to Measure a Roof Drain Ring