Pentair 53008800Z O-Ring Kit with Blue Strip Replacement Pool and Spa Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>O-ring kit replacement</li><li>Fits Pentair pool and spa filters</li><li>Includes blue strip</li><li>Measures 10-inch length by 12-inch height by 3-inch width</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31elz-1rDtL.jpg" noproxy>