Well, I had the bug of making my 3 story 2x4 c&c condo a 2x5. I really dont have any room, but hey, so what. I had smaller sheets of coroplast so I made a separate 2x1 and added it on to my existing 2x4. The 2x1 is now their hay room. It's great. I cut down the existing 1st floor 2x4 coroplast approx. 6 inches by 4 inches so they can just hop into the hay room. The grid opens to the hay room and I just pull out the coroplast and dump shavings and hay droppings into plastic bag. Of course I had to extend the 2nd Level to meet the new 2x5 1st Level. So far so good. Ill post pictures when my daughter returns my camera.