David Bolton Closer Template Marking for Retrofit: How to Locate Holes Accurately When the Original Prep Is Gone Why Template Marking Is the Most Skipped Step in a Closer Retrofit This article is for maintenance technicians, commercial subcontractors, and facility managers who are replacing a worn or failed door... closer templates commercial door hardware door closers installation retrofit Oct 12, 2026
David Bolton Adding Card Access to an Existing Mortise Lock: What Actually Has to Change at the Door What This Article Covers and Who It Helps Facility managers, security integrators, and commercial hardware specifiers frequently face the same challenge: a building already has solid-performing mortis... access control credential readers electrified hardware mortise locks retrofit Aug 8, 2026
