Glynn-Johnson

Known throughout the industry as "The Overhead Door Holder Specialist" for over 75 years, Glynn-Johnson has established itself as the premier manufacturer of overhead door holders and stops through state-of-the-art manufacturing technology and superior quality control. Now operating as a brand within the Allegion family of companies, Glynn-Johnson specializes in door control hardware designed for demanding commercial, institutional, and healthcare applications. Their comprehensive product line includes heavy-duty surface-mounted and concealed overhead door holders (90, 100, 410, and 450 Series), with the 100 Series concealed models designed specifically for high-abuse entrance and vestibule doors featuring offset jamb brackets and extended operating life. All stop-only models are UL listed as Miscellaneous Fire Door Accessories (GVUX classification) for use on fire-rated assemblies without affecting door ratings. The innovative SensaGuard 280 Series combines overhead door holding with integrated ionization smoke detection powered by a single 9-volt battery, featuring fail-safe operation that automatically releases doors when battery drops below 7.2 volts - ideal for schools, hospitals, and multifamily buildings requiring code-compliant hold-open functionality. Glynn-Johnson's acclaimed HL6 push/pull latch series has become the standard for healthcare facilities, offering non-handed installation with variable mounting positions and compatibility with mortise lock bodies. Products meet BHMA/ANSI A156.8 standards and Federal specifications, available in over 12 architectural finishes including stainless steel, brass substrates, and powder coat options. With templates allowing 85° to 110° hold-open angles, field-adjustable tension settings, and compatibility with various hinge types including continuous, offset pivot, and swing-clear configurations, Glynn-Johnson products provide the flexibility and durability required for high-traffic installations while maintaining precise door control and protecting doors, frames, and hardware from damage.