New Three Knuckle Square Barrel Hinge ASSA ABLOY introduces the McKinney Three Knuckle Square Barrel Decorative Hinge. Recommended for use on doors of average weight with average frequency, this hinge makes a bold statement. 3 Knuckle Square Barrel Hinge Announcement Accepting orders immediately. Hinges are in stock and part of the3-Day QuickShip program. Pricing can be found in the 2017 McKinney Products Price Book. For additional information, contact your local sales representative, ASSA ABLOY Door Security Solutions Representative, or call 800-346-7707.