Editorial Review Copper Portal will fit on almost any bird house. 1" entry. Installs with the 4 included screws. Helps maintain the entry diameter and prevents predators from chewing around the opening.
Features 1) 2" x 2" Square Opening is 1" Diameter 2) Made from Copper. 3) Fits on Any Bird House 4) 4 Mounting Screws are Included 5) Mantains Entry Diameter. Prevents Predators from Chewing Around Opening