M-D Building Products 87619 20-Inch by28-Inch by 30-Inch Window Air Conditioner Product Description M-D Air Conditioner Cover, M-D, 28 In Width, 30 In Length, Polyethylene, Silver, 20 In Height, With Elastic Strap, For 15000 Btu And Larger Window Units. From the Manufacturer This Air Conditioner Cover protects your window air conditioner unit to reduce maintenance costs. Expansion and contraction of ice during freeze/thaw cycles can cause unit damage. Protect unit by installing an air condition cover. Features Polyethylene For Window Units Fits Over 15,000 Btu Units Country of Origin: CHINA USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.