Size and compatibility - 42.5 in L x 30 in W x 14.25 in H. Compatible with Coleman 1, 2, 3, Mach 3 Plus, and Mach 15 RV air conditioners. Suitable for RVs, travel trailers, toy haulers, and fifth-wheel trailers. Material and protection - Made of waterproof Oxford fabric that provides waterproof, dustproof, and sunproof protection for the air conditioner. What it does - When the air conditioner is not in use, the cover protects against dust, fallen leaves, bird droppings, rain, and sun, helping to extend the unit’s service life. Design and convenience - The bottom features an adjustable drawstring for a secure, snug fit and to prevent the cover from being blown off by wind. When not needed, it folds into the included storage bag to save space. Use scenarios - Off-season storage: keep the AC unit clean and ready for the next season. - On the road or at the campsite: protect against sun and rain during long trips or in varying weather. - Dusty or wooded sites: prevent debris, leaves, and bird droppings from accumulating on the unit.