ReplacementBrand 20x20x1 MERV 11 Air Filter / Furnace Filter (6 Pack)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Minimum efficiency reporting value 11</li><li>Made in USA</li><li>Actual Size: 19 1/2 inches (length) x 19 1/2 inches (width) x 3/4 inches (thickness)</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/51HGXaAclkL.jpg' noproxy></br>