Standard bird box 32mm hole The 32mm hole designed to attract Tree sparrow, Great Tit, Nuthatch and Pied Fly Catcher. Hinged top for easy access for cleaning etc. Size :29.5cms height by 12.7 cms width by 14.5cms depth Made from exterior resin bonded ply.Corner drainage holes in floor.Manufactured with surface sunk nails to resist rusting. Treated with non-toxic wood preservative. Approx weight: 1 kilo