This highly successful model is used extensively throughout Europe. Made from a special mixture of compressed plant fibres & concrete, it provides good insulation & extremely long life. The bracket allows the box to be fixed from above or behind, & the entrance hole can be easily removed for inspection & cleaning. Swift Nesting Box Dimensions: External: H15 x D14 x L34cm (+ wing screws) Brood Chamber: H14 x D14 L39cm Weight: 3.1 kgs 20 Year warranty from Schwegler