Walter Harrisons apex roof nest box made from 15mm gauge Fir. 32mm diameter hole in the front panel. The left hand side of the box includes a panel which can be opened and used for viewing. The roof overhangs the front of the box, providing protection against the elements and predators at the entrance hole. A separate plinth is included which can be screwed to the back of the nest box (3 screws included) and which can be used to fix the box to a tree. Finished with a clear and safe preservative. 31 x 21 x 18cm