Pig-a-Boo Window is for Baby Proofing, Chew Proofing and General Fun for your Guinea Pigs.
Please note these are attached with CABLE TIES and do not fit into the connectors. It is a thinner plastic than the grids. They attach to the cage walls where needed with the zip ties.
You can leave the bottom cable ties not attached and have the window flow over the Coroplast wall if you want to stop guinea pigs from chewing on the Coroplast as well as the grids.