Sorry, this canister is discontinued.

Includes 2-part filter cartridge set. 

DSF-35 (p/n 172554) - Fits 1.5 inch standard plumbing. (The Outside Diameter of the flex hose or pipe that fits this canister is slightly larger than 1-7/8".) The replacement filter cartridge is Unicel CM-4302B.

DSF-50 (p/n 172551) - Fits 2.0 inch standard plumbing. (The Outside Diameter of the flex hose or pipe that fits this canister is slightly larger than 2-3/8".) The replacement filter cartridge is Unicel CM-4306B.

The DSF Face Plate Kit is sold separately.