For larger nest compartments, use the Excluder Aluminum Replacement 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.
Additional Product Details
- Product Weight: 0.20 .lbs
- Dimensions: 0.50(D) x 6.00(W) x 6.00(H)