ORIGINAL Watts Premier (105331) RO PURE (RO-4) MEMBRANE<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Tested against NSF/ANSI 42 for chlorine Reduction/100 %</li><li>Imported</li><li>ORIGINAL 50 Gallo Per Day Membrane for Watts Premier RO PURE UNIT</li><li>Watts recommends changing the reverse osmosis membrane every 24 months</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31nCTLpQ3kL.jpg" noproxy>