Whirlpool WHKF-WHPLBB Large Capacity 30 Micron Pleated Whole House Filter Cartridge</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Large Capacity Pleated Filter</li><li>30 micron nominal filtration rating</li><li>3 month filter life</li><li>Reduces sand， dirt， silt， rust， and scale particles</li><li>Tested and Certified by NSF International against NSF/ANSI 42 for material requirements.</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41PJOyjtmPL.jpg' noproxy></br>