Erva Portal for Bluebird Houses with 1 1/5inch opening. A shield made of steel for birdhouses with a 1 1/5inch opening. Powder coated. Includes 4 brass screws.
Helps prevent predators from chewing and entering nesting boxes.
Size: 2″ X 2″ Square with a 1.5″ Center Hole.
Made in USA by Erva