David Bolton Ball Bearing Hinges on Doors with Closers: Why the Bearing Type Is Not Optional The Short Answer: A Closer Changes Everything About the Hinge This article is for contractors, facility managers, and specifiers who are choosing or replacing hinges on commercial doors equipped with ... ball bearing hinges commercial hardware door closers hinge specification hinges Apr 23, 2026
David Bolton NRP Hinges on Outswing Doors: When and Why Non-Removable Pins Matter The Security Gap Most Contractors Miss at Outswing Openings If a door swings toward the outside of a building, its hinge pins face the public side of the opening. On a standard loose-pin hinge, that m... NRP hinges commercial hardware door hinges hinge specification outswing door security Apr 22, 2026
David Bolton Intermediate Pivots: Why They Fail, When You Need Them, and How to Fix the Problem What Are IntermediatePivots and Why Do They Matter? A pivot set transfers a door's full weight to the floor and overhead frame rather than distributing it across multiple hinge knuckles. That makes pi... commercial hardware door hardware floor closers heavy doors pivots Apr 19, 2026
