Nesting box for wild birds. Made from insulating wood concrete from FSC-certified wood. Very durable and weather-resistant. Ensures a consistent internal temperature. Easy to clean. Hole diameter of 32 mm. Measures 24 x 19 x 18 cm. The nesting box with a diameter of 32 mm is an ideal solution to provide birds in your garden with a protected breeding site. It features an entrance hole with a diameter of 32 mm and is frequented by various bird species. The box is made from robust material that protects against predators and weather conditions. The mixture of concrete and FSC wood fibers ensures a consistent internal temperature and provides good insulation. This increases the survival chances of the young birds. For hanging, we recommend aluminum nails.