AllergyZone AZFL-100 Filter Lock Air Filter Slot/Door Cover<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Eliminate leaks to help reduce utility bills and save energy</li><li>Improves indoor air quality by blocking allergens and dust from entering your duct work</li><li>Reusable， overlapping 2-piece design works with any brand 1 inch air filter up to 25 Inch long</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41S4t%2BdSDyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51qHR3FOkiL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/316Ak06SL8L.jpg" noproxy>