The 3FN bat box is manufacture from long lasting Woodcrete, making it ideal for long term mitigation projects. Like the 2FN the 3FN has two entrances, one at the back of the box next to the tree trunk and the other at the front of the box. The small front entrance provides protection against natural predators. The entrance area is stepped providing protection against small predators, draughts and bright lights. Due to the opening on the bottom, this bat box is partly self-cleaning but will require some maintenance if it is being used by a large number of bats. The front panel can be easily removed for inspection and cleaning.
The 3FN bat box is provided with a hanger and aluminium nail and should be sited in trees and is best positioned at a height of between 3 to 6 metres. Bat boxes should ideally be sited in open sunny positions. Please note that once bats have inhabited a roost site they may only be disturbed by licensed bat workers.