Internal Measurements: 21" in length x 15" in height x 3.5" in depth. Accommodates most window air conditioning units ranging from 3,000 to 7,000 BTUs.
Double Insulation: The windblock poly inner lining and the outside cover are stitched together for easy installastion
Prevent wind and cold air drafts from entering through air conditioners while keeping your home from dirt, soot.
Lowers heating costs: Eliminate the need to remove and reinstall A/C unit and reduce energy cost.
Remain in place: Adjustable straps on both sides and elastic cords around allows you to achieve a snug fit. Provide 3M Velcro, Easy installation, Minimum Assembly, Reliable, and Convenient.