Made out of 12mm untreated ply. Grooved back for easy access. Manufactured with surface sunk nails to resist rusting.Untreated due to the sensitivity of bats to even non-toxic wood preservative. This design meets with the approval of the Bat conservation trust. Size 33.5cms height × 15cms width × 15cms depth.Entrance / Exit slot 1.7cms wide. Approx weight: 1.1 kilos
