Summer Escapes Universal Replacement Swimming Pool Filter Cartridges - A or C Type (4-Pack) - RP800， RP1000， RP2000， SFS1000， SFS2000 + More<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cleans impurities out of your pool for a safer swimming experience</li><li>Each cartridge measures 8 inches long and 4.13 inches in diameter</li><li>Each filter features a built-in open cage in the middle to hold a 1 inch chlorine tablet of your choice (tablet not included)</li><li>Fits filter pump models RP800， RP1000， RP2000， SFS1000， SFS2000 and all other models using filters with dimension 8 inches x 4.13 inches</li><li>Package of four saves you time and money</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51ZhKvmME1L.jpg" noproxy>