User-friendly design:measuring 28 by 28 inches,A/C cover fits most standard-sized outside A/C units?recommends confirming A/C unit measurements prior to purchase. Prolong A/C life: Prevent all debris from entering the interior of the A/C unit from the top,while avoiding small animals living in the machine, minim electrical failures reduce maintenance costs. Quality Assurance:Good sealing,the material made of heavy-duty tarpaulin,waterproof, low temperature resistance, resistance to high winds tear. Easy to install: A/C condenser cover features 4 bungee hooks that attach securely to the sides of the unit to fit securely over the top. Easy storage: Dry the water with a towel after use. Flexible can fold in half and out it in a drawer.