Rainbow Filter Canister - RTL 25 Filter - 1.5"
Includes 25 sq. ft. filter cartridge.
Designed to be mounted in your spa shell for easy top-load access or in other areas where it is easier to run the plumbing through the bottom of the filter.
Fits 1.5 inch (I.D.) standard plumbing. (The O.D. of the flex hose that fits this canister is slightly larger than 1-7/8".)