Outdoor Air Conditioner Cover - Winter Breathable Tight Mesh Cover - 36x36 - Gray PremierAcCovers provide top protection during winter with its tight breathable mesh that does not cause rusting of your ac unit. This cover is NOT waterproof. We also sell Premier top covers. Highly resistant to sunlight, mold, mildew, and temperature extremes. 5 year manufacturer's waranty. 100 percent satisfaction guarantee