Based on the classic design of an old fashioned parrot cage the feedsafes heavy gauge steel bars allow smaller birds in to feed but exclude larger birds and all but the very smallest squirrels the lid is chained for extra security and the base is domed so that all the nuts flow to the mesh so theres no waste the feedsafe is supplied complete with a matching hanging bracketcomes with a lifetime guaranteedimensions36cm x 20cm 142 x 79