AFB Gold MERV 11 20x20x1 Pleated AC Furnace Air Filter. Pack of 4 Filters. 100% produced in the USA.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>20x20x1 pleated air / furnace filter. Actual size of 19 1/2" x 19 1/2" x 3/4". Perfect for home or business use.</li><li>Each purchase is for a pack of 4 filters that can replace any standand furnace or air conditioning filter.</li><li>Manufactured by AFB in the USA， using 100% US components.</li><li>MERV rating of 11. Superior filter， perfect for pet owners. Filters pollen， dust， auto emmissions， and pet dander.</li><li>AFB is a leading manufacturer of air filters， made in a US factory and shipped direct to your door. AirFilterBuy: Breathe Better!</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/5174dd9I54L.jpg' noproxy></br>