David Bolton Why Fail Safe Is the Wrong Default on a Mortise Lock with a Deadbolt The Word "Safe" Does Not Mean What You Think It Does on an Electrified Mortise Lock This article is for contractors, facility managers, and architects who are specifying or troubleshooting electrified... access control commercial door hardware electrified mortise locks fail safe hardware life safety compliance Sep 12, 2026 Our Blog
David Bolton Surface Vertical Rod Exit Devices on Door Pairs: Why the Strike Sequence Gets Decided After the Astragal Is Already Installed Why This Gets Ordered Wrong on Paired Openings Surface vertical rod (SVR) exit devices are a common specification on pairs of doors in schools, hospitals, retail exits, and industrial facilities. They... door pairs exit devices fire exit hardware life safety compliance surface vertical rod Jun 8, 2026 Our Blog
