Features: Easy to Install: This cover is easy to pull the cover over the device and fasten it with the straps. Preferred Material: This cover is made of thick oxford cloth, it has the characteristics of waterproof, and the water will not leak out when in use. 3.0M Drain-pipes: The 3.0M drain-pipes allows you to use it mre easily, you can easily store the drained water in a bucket. Adjustable: Fastener design in the cover edges for you to adjust the open mouth according to your needs. The M size is suitable for 1-1.5P air conditioner and circumference within 2.4m, and the L size is suitable for 2-3P air conditioner and circumference within 3.5m.