Blue Devil B8371 Replacement Cartridge<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement cartridge for Blue Devil 70 Sq. Ft cartridge filter</li><li>Made of genuine Reemay</li><li>15-1/2" long; 7" diameter and 3' center holes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31SnzAMwMSL.jpg" noproxy>