MSR Guardian Filter Cartridge Replacement<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> When the Time comes to replace the Hollow fiber filter on your guardian， the guardian filter cartridge replacements have you covered </span></li><li><span class="a-list-item"> This replacement filter cartridge restores your guardian purifier's flow rate and Lasts up to 10，000+ liters </span></li><li><span class="a-list-item"> Removes Viruses， bacteria， protozoa， and particulates， like dirt and sediment </span></li><li><span class="a-list-item"> Hollow fibers provide the most reliable means for purification in many real-world situations </span></li><li><span class="a-list-item"> Made in the USA of US and imported materials </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41PDahuhLuL.jpg" noproxy>