Glynn Johnson 704H-US26D Surface Overhead Hold Open
Heavy-duty surface overhead door holder/stop
Designed to meet the demands of high-traffic industrial applications. Simple to install.
Offers rugged durability and ease of installation. The surface applied door and jamb brackets provide reliable door control, yet require minimal door and frame preparation.
Provide a durable hold-open mechanism that can be turned off, allowing the unit to function as a shock-absorbing stop. The hold-open tension is simply adjusted incrementally for increased or decreased holding power by turning the nut at the end of the bar.
Hold-open (H) models provide a selective hold-open function with easy-to-adjust tension. A simple 90° rotation of the roller mechanism disables the hold-open function, allowing the unit to serve as a shock-absorbing stop. The hold-open function provides a convenient method of holding the door open at a predetermined position for short or long periods of time, permitting an unobstructed traffic flow through the opening.
Stop-only (S) When the hold-open function is not a requirement, stop-only models provide a reliable method of door control. Stop-only models provide the same shock-absorbing capability as hold-open models. The stop-only model may be used on fire doors.
Classification: Stop-only models are classified as Miscellaneous fire door accessories. This classification applies to use on either hollow metal fire doors or wood fire doors.
Material substrate: Constructed primarily of brass and 300 Series stainless steel substrates, with several components fabricated of steel treated to resist corrosion. 1/2" diameter stainless steel bar in US32D finish. Spring, washer and nut provided in a clear, zinc finish.
