This is the top of the multilevel cage. The boys currently reside here. Basically two 1x1 lofts with a walkway. The positioning of the ramp allows for them to still run laps below. Two of the front grids fold down to make it easier for me to reach in and clean the cage. The boys don't really use the litter box but it does help keep the hay contained. The smaller grids are just cut regular sized grids. A drimmel comes in handy for cutting and sanding down any sharp edges.