Made in the USA! Wooden Nest Front Necessary to pair up birds for mating. Nest front is made to fit your 12"x24”, 3/4" inch thick nest box with hinged door. One quarter inch dowels spaced close enough to use for any breed of pigeon, including the smaller breeds. The door measures 4 1/4in. wide by 8 1/4in High, attractive and functional. Use during the breeding season to mate your birds by locking them in, after they have mated, open the door and they will protect their new nest box.