These clear and flexible plastic hinges work well on both Coroplast (4mm) and Cagetopia-brand Grids or grids with a similar wire gauge. They grip well and we use them in various products, such as attaching low ramps (Coroplast) to Cagetopia Grids.
They can be used to attach Cagetopia Windows to Cagetopia Grids, Coro to Coro, Grid to Grid or Grid to Coro and more.