Waterway Plastics filter model 500-9910 is a 1-1/2"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.
Complete Filter Includes:
- Niche Lock Ring (secures the body to the niche).
- Lid Lock Ring (secures the lid).
- 100 Sq. Ft. Cartridge.
- Lid w/o bromine feeder tube.
The diameter of the hole in the niche for this canister is 6-7/8".