Rainbow/Pentair RTL-25, model R172502J is a 2"s top load filter.
For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while the top is accessed from above the spa.
This complete filter includes:
- Niche Lock Ring (secures the body to the niche)
- Lid Lock Ring (secures the lid)
- Push Down Lever (to secure and release the lid lock ring)
- 25 Sq. Ft. Cartridge
- Lid w/o Chemical Feeder. (Lid w/ chemical feeder is optional)
The diameter of this filter canister is 6-1/2".
The diameter of the hole in the niche is 6-5/8".