Andy Jackson began Builders Brass Works in the early 1950’s making high end, high quality door pulls, dome stops, kick plates, hinges, flush bolts and various other types of door hardware for the construction industry. He knew that quality would be a key ingredient of his success. To ensure this...
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Offset closers typically do not open a full 90 degrees, but Jackson has developed a method of installation that does create a 90 degree opening. Instructions are in the overhead concealed closer box or you can call customer service for details. Jackson also has a closer with a hole drilled through the spindle to accommodate wires (so they don’t show) for various electrified door configurations. The part number is 20-151M.
There are two styles of slide channel assemblies. The standard channel is 1/2” thick, and the deep slide channel assembly is 25/32” thick. The variation is to accommodate a wider overhead rail.
To determine the overhead concealed closer spring size required for a specific application, Jackson has determined approximate opening force (in pounds) the different spring size door closers exert, depending upon the size of the door.
These charts are based upon calculations using a standard aluminum glass storefront door whose height is seven feet. The door width ranges from 2’6” to 4’0”. Recommendations are based on average conditions. Tall doors or stack pressure may require a larger fixed spring or adjustable closer.
NOTE: An auxiliary floor or overhead door stop is always recommended to prevent structural interference and possible door and closer damage due to over-extension of maximum allowable door swing.
Jackson 20-330 Series Overhead Concealed Closers are available as closer mechanism only or standard packages. A standard package includes closer mechanism, mounting brackets, arm package and bottom pivot.
Jackson has always been at its present location, 3447 Union Pacific Avenue, East Los Angeles, CA 90023. For more information, contact your local locksmith wholesaler or Jackson Corporation, Phone: 877-394-8338. Fax: 800-888-6855. Web site: www.jacksonexit.com.
Bob Ward is the Sales and Marketing Manager for Jackson.
Unlike the gear-driven piston type closer, Norton says its cam action closer is significantly more efficient, providing up to four pounds closing force for a five pound opening force.