Cascati 6ch-47 Filter Replaces Unicel 6CH-47 Top Load Replacement Spa Filter Cartridge 47 Sq Ft PTL47W FC-0315<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cascati Pool Spa Filter Replaces Unicel 6CH-47 Top Load Replacement Spa Filter Cartridge 47 Sq Ft PTL47W FC-0315</li><li>Outside Diameter: 6"</li><li>Length: 8 1/2" (also 9”)</li><li>Unicel – 6CH-47 (6CH47)</li><li>Bottom Opening: 1 1/2" MPT Threaded， Male Thread</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ryPeXIunL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Mnd2KVmXL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Pu75OhSSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/1125qF3-9eL.jpg" noproxy>