Guardian Pool/Spa Filter • Replaces Unicel C-4950， Pleatco PRB50-IN， FC-2390<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>REEMAY® Filtration Fabric</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31VlAKJgNLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/61Fs9h59SoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41DjFEzg0dL.jpg" noproxy>