This beautiful red oak rack is great for displaying 8 pieces. The bore for the barrel rest is 2 3/8" which should be ample for double barrels. Each rack is assembled prior to shipping and is shipped intact. To begin using you need only to loosen 2 wing nuts, easily remove 2 carriage bolts, swing top rest up, and re-install carriage bolts and wing nuts, which makes this unit perfect for taking to shows or to the hunting camp. Overall dimensions: 36" high, 24" wide outside, and 14" front to back. Each rack is made in the USA by skilled craftsmen. This lovely unit is available with natural or walnut stain and clear lacquer finish. Also available unfinished. All of our products are proudly MADE IN THE USA!