Sunnydaze Heavy-Duty Square Air Conditioner Cover, Black, 34 X 30 Inch Polyester Measures 34 inch square x 30 inch tall AC Cover is made from heavy-duty 300D Polyester with PVC backing for durability in the elements Waterproof and Weather Resistant so it won't crack in wet or cold weather Drawstring & toggle for secure fit Sunnydaze Decor backs its products with a 1-year manufacturer's warranty The side vents allow airflow to prevent wind lofting and mildew buildup causing rust while the cover is on your air conditioner unit. The extreme breathability of this cover helps prolong the life of your air conditioner unit and ensures it stays in working order.