DETER PREDATORS FROM YOUR BIRD HOUSE: 1/2 inch thick poly lumber deters and slow downs predators from your bird house 1 1/8 INCH HOLE: 1 1/8 inch hole diameter is perfect for Chickadee and House Wren birdhouses ECONOMICAL: Eco-Friendly recycled poly lumber is guaranteed not to crack, split, or fade in the elements CHARMING DESIGN: Charming bird design and vibrant color adds whimsy to any birdhouse GUARANTEED: Guaranteed not to crack, split, or fade! Will add protection for your feathered friends season after season. This wren-shaped portal cover is made in Southern Indiana from 1/2 inch thick recycled poly lumber to prevent predators from gaining access into the birdhouse or nesting box. The 1 1/8" hole diameter is the perfect size for Chickadees and House Wrens. Our selection of vibrant colors will add bright, whimsical charm to your birdhouse and the poly lumber (which is guaranteed not to crack, split, or fade) will add protection for your feathered friends season after season. Dimensions: 3" W X 3 1/4" H 2 Screws are included. Sold Individually