Provides extra protection by doubling the depth of the entrance hole. Makes it more diffcult for predators to get to the eggs or squirrels to enlarge the hole.

 

Holes available 1 inch,1-1/8 inches,1-1/4 inches,1-1/2 inches,1-9/16 inches,2-1/4 inches,2-1/2 inches,3 inches in diameter.

Quantity:   Size 1 inch 1-1/8 inches 1-1/4 inches 1-1/2 inches 1-9/16 inches 2-1/4 inches 2-1/2 inches 3 inches