C-4305 replaces: Pleatco PMT50, Unicel C-4305, Filbur FC-1630, FC-1630M, FC-1617, FC-1618, Aladdin 15003. OEM CL-2807, CL-2810, 220142, 220145, 220152, 220175.
Commonly used in: Advantage Mfg., Cal Spas, Dolphin Spas, Martec, Pageant Spas, Sonfarrel and others.
