Universal Window Seal Kit for Portable Air Conditioner of Exhaust Hose 5.1 Inch Diameter with Coupler Adjustable AC Vent Kit PVC Seal for Sliding Window

The wrong one was shipped but I used it anyway. It is a very high quality plastic.

Does what its supposed to do.

easy to assemble, sturdy and affordable!

Easier than the original component.

It took me 5 minutes to assemble once I found the video tutorial. I live in Florida and the humidity can make the heat unbearable. Once this thing was in the room cooled down so fast. Great value.

Hose connector don’t fix Black & Decker AC

Unfortunately the window kit shipped with our GE portable a/c was flimsy and cut in a way that the side panels blocked the hole to attach the hose in our size window (even though it said it could handle that window width). So we purchased this as a replacement, and it worked perfectly. It was easy to put together, its staying put, and its just generally doing what we need so we can run the a/c in the bedroom. Very happy with the purchase. Only recommendation is to seal around the edges with a high density foam tape (not typical weather stripping, but more like 1 1/4 in wide and 1/8 - 1/4 in thick.

If your window is somewhere roughly between 17 inch and 21 inch you will need to cut the back plate down to size as the circular duct attachment protrudes out the back. Pretty expensive for what it is but then it appears they all are.