Unicel C-7367 Replacement Filter Cartridge for 67 Square Foot Dimension One Spas<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Diameter: 7 1/8-inch; length: 10 1/2-inch</li><li>Top end cap: closed with y stand-offs， 0-inch inner diameter; bottom end cap: open with twist lock， 2 0/0-inch inner diameter</li><li>Pleat count: 215; filter media: 3-ounce reemay 2033; filter area: 75 square feet</li><li>Get more efficient filtration and better water clarity with Unicel filters</li><li>Longer time between cleanings; meets oem specifications</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41FsjupHNhL.jpg" noproxy>