2 Pack Replacement Filter 20x20x4 MERV 11 AprilAire Model 310 Compatible Whole

The product is a 2-pack of replacement filters for the AprilAire Model 310 whole house air cleaner. These filters are compatible with the Crilokp brand and are made of filter cotton material. The filters are in a standard size of 20x20x4 and have a shade of 313-filter. They are designed for corded electric power source and are not insect repellent treated. The product is other in nature and has a standard feature set, suitable for keeping your home clean and fresh.