Pentair 24700-0072 20-Inch O-Ring Replacement Pool and Spa Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>O-ring replacement</li><li>Fits Pentair Jacuzzi TRI-C.L.O.P.S. cartridge and Earthworks DE filters</li><li>Also fits Pentair Swimquip HRS and DES-Series pool/spa filter models DES25-01， DES36-01， DES51-01， DES60-01</li><li>Measures 20-inch tank</li></ul></div><img src="http://ecx.images-amazon.com/images/I/413-SWWF77L.jpg" noproxy>