HeavyDuty Beathable Tight Mesh Winter Full Air Conditioner Cover - 36x36x35ht - Black Provides protection during winter with its tight breathable mesh, that does not cause rusting of your ac unit. Winter full covers are made of heavy duty material that may last up to 10 years, with a full 5 year manufacturers warrenty. This cover is NOT waterproof. We also sell Premier Full covers with waterproof tops. All our Covers are made in America using American Materials and Labor. 100% satisfaction guarenteed.