Review on ❄️ Winter Window Air Conditioner Covers - Exterior AC Unit Covers, 25.5W x 17H x 21D Inches by John Gray

It's quite durable, especially for the price. I made some mods to try to make it better and last longer. Some tape along the top where the AC meets the window, see area highlighted in yellow. I wrapped the device in thin polyester insulation and taped it in place to create a "sleeve" that can be removed for use. The AC box has a few sharp corners at the top, but thankfully the lid sits about 2 inches lower than the unit. I taped a 2 inch piece of foam around the edge (highlighted in yellow and outlined in red) to protect the material and give more insulation. The end result is that the lid tightens up nicely and seals the whole thing. If the winter weather spoils it I will change the rating but for now it seems good.