Guardian Pool/Spa filter Fits Pleatco PA175 Unicel C-8417 Filbur FC-1294 Hayward sta-rite CX1750-RE 28-3/16'' length 8-15/16'' diameter 4'' top and bottom hole Replaces Pleatco PA175, Unicel C-8417, Filbur FC-1294 Hayward Star-Clear Plus