AIRx HEALTH 20x20x1 MERV 13 Pleated Air Filter - Made in the USA - Box of 6<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>MERV 13 furnace filter premium pleated filter， actual size 19.5" x 19.5" x .75"</li><li>Traps respiratory irritants， smog， bacteria and viruses - perfect for health protection</li><li>Our highest pleat count - far more than most retail air filters， more media to trap particles</li><li>Made in USA</li><li>Compare to 3m Filtrete ultra allergen MPR1500 and healthy living particle reduction MPR2800</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51MV5iZrEIL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/514jtn4hKiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51ySnnhqJ1L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41BRPj6P69L.jpg" noproxy>