David Bolton Why the 4x4 Ball Bearing Hinge Gets Skipped on Light Commercial Doors — and When That Decision Comes Back to Haunt the Schedule The Sizing Decision Nobody Revisits Until the Door Starts Binding This article is for contractors, facility managers, and architects who have landed on a commercial door schedule and wondered whether ... ball bearing hinges commercial door hardware hinge sizing hinges light commercial Jun 11, 2026 Our Blog
David Bolton Mixed Corner Radii on a Spring Hinge: Why One Square Leaf and One Radius Leaf Is Not a Mistake What This Article Covers If you have ever pulled a residential or light-commercial spring hinge out of a box and noticed that one leaf has perfectly square corners while the other has rounded corners,... door hardware hinge installation light commercial spring hinges wood door prep Apr 23, 2026 Our Blog