2 Guardian Pool Spa Filter Replaces Unicel C-4950RA Pleatco Prb50-In-M Fc-2390M， Antimicrobial<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>-Bottom Opening: 2 - 1/8"</li><li>-Top Opening: 2 - 1/8"</li><li>-Outside Diameter: 4 - 15/16" (Also replaces 5")</li><li>-Length: 13 - 5/16"</li><li>50 sqft</li><li>Anti-microbial Media material</li><li>Meets or exceeds OEM quality!!</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31HIz9O1TiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51ZZAb-9qZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51jkVjL971L.jpg" noproxy>