Attaching the Amador Screech Owl or Kestrel house to a 1.25” inner diameter schedule 40 thickness steel pole is an easy mounting method and deters predators from climbing and entering. If required, 1.25” inner diameter poles sets for kestrel or screech owl houses are also available and include this hardware kit. Our hardware kit is simple to use and prevents the nesting box from rotating in the wind and / or sliding down the pole.