PVC Mesh + 420D Fabric: Window AC Cover is made of heavy-duty PVC + 420D waterproof fabric. The PVC mesh design allows air to circulate freely, allowing the air conditioner to work normally; the top is 420D Oxford cloth, and the inner layer is silver-coated, which has good waterproof and UV protection functions.Easy to install and clean: When using the air conditioner cover, just align the cover opening with the air conditioner and put it directly into place. Then arrange the two buckled straps of the cover and buckle them. When the air conditioner cover gets dirty, just wipe it with a clean ragVarious Sizes: The outdoor window air conditioner cover has four sizes for you to choose, 27.6'W x 22.8'D x 18.9'H, 25.6'W x21'D x 18'H, 21'W x 15.8'D x 15'H, 17'W x 12'D x 13'H.Suitable for most standard window ac units 3,000 - 7,000 BTU. Please measure the size of your exterior window ac unit cover when purchasing!Satisfactory After-service : We are committed to make sure you love your air conditioner covers for outside. If you are not completely satisfied with your purchase, please send us a message. We will reply within 24 hours until you are satisfied.Bugs Resistance: The top of the cover is waterproof, UV-proof, dust-proof and leaf-falling-proof. And the mesh on the side of ac cover is bugs-resistant, isolating the bugs outside and preventing them from entering your room through the air conditioner or hiding in the gaps to damage the machine.