90 - Glynn Johnson
The track Glynn Johnson 90 Series surface mounts to the door and the arm mounts to the door stop. Track mounting allows the arm to slide creating a moving pivot point. Built-in stop is standard and optional hold-open feature can be added.
Ordering overhead stops is fairly simple if you follow a few basic rules. The 90 Series is a popular choice due to it's flexibility. The track and arm combination allows for smooth opening and closing motions. Plus, two hold open options are available. The standard hold open (H) allows for only one position setting, anywhere between 85 and 110 degrees. The exact position is set during installation. Once a position is selected, it will remain the only hold open position. The friction hold open (F) allows for a moving hold open point, often called a multi-point hold open. The door can be opened to any position and the friction of the track will hold it in place. The amount of friction is adjustable using an Allen Wrench. Overhead stops are sized. This means different models are used for different door widths. The ''size'' is added to the series number.
Since a standard commercial door is 36'' wide a Size 4 stop would be used The next step is to decide if you need a stop only, or a stop + the hold open feature. The designation for stop only is "S" and for hold open it is "H". Below is a chart for both series showing size and feature designation.
Compare all the Glynn Johnson overhead holders and stops by clicking here. |
Heavy-duty, surface mounted.
