RAINBOW / PENTAIR DSF 35 filter pair

Pair of replacement filters 35 square feet (17.5 each), the equivalents on the market are: Filbur (FC-2386) Unicel (C-4401) & Pleatco (PRB17.5F-PAIR). Diameter 4 15/16'' height 4 5/8''. 2 1/8'' top and bottom opening . Manufacturers using this filter: Aqua Tech Spas, Beachcomber Spas, Clearwater Spas, Dynasty Spas, Lifestyle Spas, Maax Spas, Coleman Spas, Pentair Pool Products, Sundance spas, Canspa MFG and Waterway Plastics.