David Bolton Surface Vertical Rod Exit Devices on Tall Doors: Why the 8-Foot Door Prep Changes the Strike Sequence Before Any Hardware Ships Why Tall Doors and SVR Exit Devices Are a Combination That Trips Up Even Experienced Contractors This article is for commercial contractors, facility managers, and architects specifying or replacing s... SVR panic hardware commercial door hardware egress compliance exit devices fire-rated exit hardware Jun 10, 2026 Our Blog