This Waterproof Air Conditioner Cover for Outside Units Air Conditioner. Waterproof & Lightweight - Made of high-quality Oxford fabric, water-resistant material and dustproof. Lightweight but durable, it did can provide protection to your outside ac unit. The best Air Conditioner Cover protector for your air conditioner. Mesh Hole and Mesh Back Design - Allow air flowing, prevent moisture and condensation build up. Preventing rust, not only minimize electrical failures and energy saving, but also more healthy to human. Multi-function - Air Vent Cover helps prevent snow and water from getting into the vent, reducing interior humidity. Unique silver-coating thicker design, prevent be exposed to the sun and heat insulation, prevent air conditioner won't crack in cold or hot weather.