David Bolton Specifying Ball Bearing Hinges for Commercial Doors: Size, Finish, and Fire-Rating Essentials Why Ball Bearing Hinge Specification Matters More Than Most Specifiers Realize Choosing a hinge sounds straightforward until a door starts sagging six months after opening day, a fire inspector flags ... ball bearing hinges commercial hardware specification door hinges fire door hardware stainless steel hinges Apr 22, 2026
David Bolton Self-Closing Doors Done Right: Choosing and Installing Spring Hinges Why Spring Hinges Get Specified -- and Where They Fall Short Spring hinges are one of the oldest self-closing solutions in the hardware catalog, yet they remain widely misapplied. Contractors, facilit... commercial door hardware door hardware installation self-closing doors spring hinges stainless steel hinges Apr 22, 2026