- WITH INCREASED PROTECTION AGAINST MARTENS
The half-hollow nest box has new small improvements, a roof inclined at 5 degrees and a hinged front part. The size of the side flaps or the height of the front opening can be adjusted by arrangement (please specify in your message).
The oblong hole is only 4 cm high, the marten cannot squeeze through. Security is further increased by a reinforcing prism in the entrance.
Dimensions in cm: 28 (H) x 20 (W) x 23 (D) / roof 25 cm