WJ Dennis & Company Outdoor Window Unit Air Conditioner Cover Model 20 Medium For Outside Winter Go to amazon.com Related posts The 16 best window weatherproofing outdoor for 2022 FeatureHelps unit resist mildew and rotFor use with a window air conditionerExtend the life of your air conditioner with this reusable cover DescriptionEmbossed poly air conditioner cover extends life of unit and resists mildew and rot.