- 6.25 inch diameter lid accepts black threaded lock ring.
- Used on RTL/RCF series top load filter canisters.
- Includes large o-ring and bleeder valve with o-ring.
- MFG # R172385, Replaces: 172385 , 4690-21 , 603378 , 788379701659 , R172385 , RAI-051-3493