The Hamilton Home Products mobile home coil filter wrap kit is designed for unboxed return applications. When used with louvered front door and frame, Item# 700295 sold separately, this filter wrap filters the air and protects the coil from dirt and debris. U.S.A. Product Style Accessory, Dimensions L x W x H in. 18 x 18 x 1/4, Accessory Type Filter wrap kit.