This beautiful hand-made Ultimate Bluebird House is made by JCs Wildlife with Recycled Poly Lumber for Eastern and Western Bluebirds. It features all screwed construction using stainless steel screws and routed edges. This house will not crack, split or fade - it will look great for years to come. The colors are vibrant and UV protected. The entrance hole diameter is 1.5" inches, just perfect for bluebirds! The interior front wall includes notches to help the birds enter and exit the box. A stainless steel mesh riser on the bottom holds the nest up off of the floor for circulation and extremely easy cleaning. The poly lumber is also stain proof and easier to clean than regular wood. One side door opens to a viewing window to allow you to see the nest without disturbing anything inside. The word "View" is clearly marked on the door. The other side door, clearly marked with the word, "Clean" opens to allow easy access for cleaning. Can be attached to the Squirrel Stopper Denali Squirrel Proof Mounting Pole on the bottom or back of the house. Made in the USA! Overall Dimensions: 9.5" W X 12" H X 8" D