The roosts in our coop are slanted so that the girls can more easily get on them, but notice that they are attached to the wall on the low end of the slant instead of the high end. This allows us to fold the whole contraption up against the wall if we need better maneuvering space in the coop, such as for a periodic shoveling. The bottom of the rack is attached with two regular interior door hinges, and ropes tied to the ceiling determine the angle when the roosts are lowered. If the angle is too steep, then the rungs will be too close together and the birds will poop on each other. If the angle is too narrow, then the rack takes up too much space in the coop.