David Bolton Mixed Corner Preps on Spring Hinge Replacements: Why the Square-by-Radius Profile Gets Ordered Wrong Before the Door Is Ever Measured What This Article Covers and Who It Helps When a spring hinge fails on a self-closing door and a replacement is needed, most contractors focus on size and finish. The detail that actually causes rewor... fire-rated hardware hinge corner profile replacement hinges self-closing doors spring hinges Jun 17, 2026 Our Blog
David Bolton Mixing Square and Radius Corner Spring Hinges on the Same Door: When the Frame Prep Decides the Hinge Profile The Problem That Shows Up at the Jobsite, Not on the Schedule This article is for contractors, facility managers, and architects who have ordered spring hinges and discovered — after the door was prep... commercial door hardware fire-rated openings hinge corner profile hollow metal frames spring hinges May 18, 2026 Our Blog