Heavy Service and Material: High quality polyester Oxford, with a professional waterproof sub -coat, is resistant to rupture and has more powerful waterproof performance, protects the outdoor air conditioner unit from excessive air damage and extends its life. Extension of the life of the air conditioner unit and design against the wind: the four -configured air hole prevents moisture accumulation in the unit, accelerates the evaporation of inner water vapor and prevents the air conditioner from rusting. Two shrinkage skirts allow to adjust to a strict and special harmony to fix your air conditioning cover on the windy most windy days. Effective Protection: Use a tear -resistant double needle patchwork and waterproof PU sealing band, laminated waterproof strips increase the level of snow and water resistance. Easy to assemble: A slit of the back allows wiring and passing the pipes, the side velcro is fixed by closing. Just install Velcro and complete the installation. It can be easily moved and installed to hold two pillows. : Our air conditioning caps for outdoor units 24 'x 24' x 30 '(U x g x y) are designed to match square air conditioners. Measure your air conditioner to select the appropriate cover size.