Glynn-Johnson 81 Series Heavy-Duty Surface Overhead Door Holders/Stops
Intended for Heavy-Duty applications, these models supply long-lasting protection for doors, frames, hardware and surrounding walls or obstructions. They are compatible with most door closers and present a highly reliable hold-open function and rugged shock absorption. All models feature jointed-arm design and centered jamb bracket.
Designed for heavy-duty applications, the 81 Series models are perfect for doors that are opened repeatedly. They provide long-lasting protection to doors, frames, hinges, related hardware and surrounding walls or obstructions.
- Hold-Open: The hold-open model should be used when doors will need to be held open at a preset position for an extended period. This allows unobstructed traffic flow. Hold-open model provides a selective hold-open function. A simple turn of the thumbturn disables the hold-open function, allowing the unit to serve as a shock absorbing stop.
The hold-open mechanism is selective and may be turned on or off with a simple turn of the thumbturn. In the “off” position, these models act as stops and shock absorbers. In the “on” position, they hold the door open at a preset position between 85° and 110°. The hold-open force is not adjustable in the 81H Series.
- Stop-Only: When the hold-open function is not required, the stop-only models provide the same effective door control, without the hold-open feature. The stop-only model may be used on fire doors.
The 81 Series stop-only models are classified by Underwriters Laboratories (UL) as miscellaneous fire door accessories. This classification applies to use on either hollow metal fire doors or wood fire doors. These units may be used on doors of any rating. As a reminder, the miscellaneous fire door accessories (GVUX) section is defined by UL as: “Miscellaneous fire door accessories are intended in the individual Listings. The accessories have been investigated to determine that when installed in accordance with the manufacturer’s instructions, the accessories do not adversely affect the fire rating of the fire door and/or fire door frames.”