Dow Filmtec TW30-1812-50 Reverse Osmosis Membrane<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Polyamide Thin-Film Composite</li><li>Imported</li><li>Rated at 50 psi and purifies about 20% more water than elements rated at 60 psi</li><li>Shipped dry for convenient and a long shelf life</li><li>Free Chlorine Tolerance:</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31b1i-qgL6L.jpg" noproxy>