Wraparound break-apart squirrel baffle with a copper tint finish, for a standard 4x4 post (3-5/8" x 3-5/8"). 22-1/2" in diameter. To keep squirrels from getting onto your bird feeder, place your post-mounted feeders 8-10' away from railings, roofs or trees. Squirrel baffles should be a minimum of 4' from the ground to protect the bird feeder. To close your baffle, slide the left tab into the right slot until they snap together. Corrosion resistant screws are provided to attach the baffle to your post.