Attaching the Amador screech owl or kestrel house to a 1” inner diameter schedule 40 thickness steel pole is an easy mounting method and deters predators from climbing and entering. 1” inner diameter poles sets also available with 1 piece 1” pole or 1” pole + wood 4x4 and attaching hardware. Our hardware kit is simple to use and prevents the nesting box from rotating in the wind and / or sliding down the pole.