Review on EXPAWLORER Dog Fence Window: Durable Acrylic Dog Dome for Reduced Barking, Backyard Fence, Dog House - Includes Necessary Hardware and Instructions by Paul Wilson

I bought this to give my coop more light in an area that was too dark for my chicks. We used plywood so a lot of the other windows I found were actual windows, not the ones meant to be built into plywood, but this works great! My husband and I followed the instructions and it worked pretty well, so to speak. I wish we were a bigger size but it still looks great and lets in lots of light. I gave it four stars because my husband made sure when tightening the nuts that they were tight but not over tightened as clearly stated in the instructions. When we looked inside, there were 2 cracks! I think overall it's a good product and I'd recommend it, but just make sure you only tighten it with your hands, I wouldn't even suggest using a socket like we did.