20x20x1， Percisionaire Ez Flow Ii Front Panel Merv 4， 10055.012020， Pack12<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>20" x 20" x 1"</li><li>EZ Flow II spun fiberglass disposable furnace filter</li><li>Flat panel</li><li>No metal media retainers</li><li>Up to MERV rating 4</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41YQQF7L6HL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41YQQF7L6HL.jpg" noproxy>