6 Guardian Pool Spa Filter Replaces UNICEL 6CH-940RA--FILBUR FC-0359M--Pleatco PWW50P3-M &hellip; Outside Diameter: 6" Length: 7 5/8" (also 8) Top Opening: Handle Bottom Opening: 1 1/2" SAE Threaded, Male Media Weight - 3 oz. SQ FT Media - 50' sqft Unicel  6CH-940 (6CH940) Filbur - FC-0359 (FC 0359) Pleatco  PWW50P3 Microban filter media 6 pack bulk filters