This nesting box provides a dry clean and dark area for hens to lay eggs and features a space saving modular design that can be mounted vertically or side by side. It mounts securely to the wall with slide type screw holes and is easy to remove for cleaning. Made from high density impact resistant polyethylene, it is easy to maintain and will not rust rot or corrode. The pre installed perch flips down into place to give hens a convenient landing spot before entering the nest. Warmer than metal units in winter and more affordable, it is proudly made in the USA.