4.5 x 10 String Wound Sediment Water Filter Cartridge - PWF4510SW by Shelco<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>4.5 x 10 wound sediment cartridge</li><li>Recognized as the industry standard for high quality wound filters</li><li>Lasts 2-3 times longer than standard melt blown or spun bond cartridges</li><li>Independently tested to have the highest efficiencies in the industry</li><li>Fits Standard Big Blue type housings.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/516YgF2GjOL.jpg" noproxy>