Made from exterior quality resin ply, corner drainage holes in floor, manufactured with surface sunk nails to resist rusting.Left uncoated as dormice are sensitive to wood preservative.Comes with a completely removable roof held in place with hook & eye.A screw is situated on the front of the box to assist in fastening it to a tree with wire. Size 21cms height by 12.5cms width by 15cms depth. hole 3.2cms. Approx weight: 1 kilo