Watts Premier 560014 24 GPD Membrane<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Polyamide Thin-Film Composite</li><li>Imported</li><li>24 gallon per day membrane production</li><li>Membrane fits all standard RO systems</li><li>Diameter: 1.8" Diameter x 10.75 Total Length</li><li>NSF/ANSI Standard 58 Listed</li><li>This membrane is not for use with the quick change reverse osmosis systems</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41QzeOoMXlL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41kgrr72a9L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41eprPwoMCL.jpg" noproxy>