Watts B3-FLG Cast Iron Drain Ring

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Product Overview

Watts B3-FLG Metal Drain Ring for RD200 Drains 9-1/4" O.D. , 4-7/8" Bolt-to-Bolt [3 Bolt]

Replacement cast iron drain ring for the Watts RD-200 Roof Drain.

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

This a 3 bolt ring that has "Ears" on two sides and is a primarily flat ring with slight bevel around the center of the ring.


  • Outside diameter: 8-1/4"-in.  [9-1/4"-in. at ears]
  • Bolt-to-bolt: 4-7/8"-in. 
  • Casting#: B3-FLG


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