1.Made Of Durable Mesh Material Ventilate To The Unit And Reduce Moisture Inside AC Outdoor Unit And Durable. 2.Easy To Install:Firstly Put The Cover On The Top Of Your Outdoor AC Unit,Then Use Four Adjustable Bungee Cords That Attach To The Sides Of The Unit To Fit Securely Over The Top. 3.Mesh Air Conditioner Cover Can Keep Leaves Debris Out To Prevents Rust And Extend Air Conditioner Life & Save Money. 4.The Ac Cover Fits Most Standard-Sized AC units. Pls Measure Your AC Before Purchasing. 5.AC Cover Provides Top Protection From Leaves & Branches And Debris While Allowing Air Through To Keep Air Conditioner Dry Inside. Package Included: AC Top Cover(40"*40"/36"*36"/32"*32"/27.9"*27.9") x1, Bungee.