Check the listing for details. JCS Wildlife Barred Owl Box Do It Yourself Assembly Kit. Condition: New. Listed at 105.97 USD. Build your own JCs Wildlife Barred Owl Box with this Do It Yourself Assembly Kit! Now you can assemble one of our boxes with your own hands. As a great children's project, you'll feel the satisfaction of a product you made hanging in your yard, and enjoy wildlife in your area! The 7-inch entrance hole of the JCs Wildlife Barred Owl Box allows for easy access in and out. Additionally, this box is designed as one room for easy nesting. This owl nesting box is also designed with a 2" front overhanging roof, allowing for additional protection from the elements. Special "grip" grooves on the outer front help the adult owl gain access into the box. No perches exist outside of the box as they could provide convenient perches for predators or would expose young owlets to danger. A door on the.