Songbird Essentials SE965 Blank Aluminum Doors Trio Houses

For larger nest compartments, use the Blank Aluminum Doors which will enlarge from 6 x 6 inch to the roomier 6 x 12 inch size. These roomier compartments will still prevent most starlings from nesting.
Item Depth: 6
Item Width: 6
Item Length: 0.5
Country of Origin: USA