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“ what is an OH holder ”

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What special template (ST) is used with a 4040 Rw/PA mount closer and a GJ overhead stop?
ST Number Product 1 Product 2 Description ST-2776 ...
Does a SEH require a door closer?
The SEH is an "electronic holder" (ONLY) that is used to hold open a Fire Rated opening. It requires a door closer to be mounted on the opposite side. It is normally used on an existing opening wit...
Can I use a Glynn Johnson 410 with a 4040 regular (pull side) mount?
ST-1630 is required when mounting a 4041 or 4040XP door closer regular (pull/hinge) side with a concealed GJ100 or GJ410 series over head stop.
What are Hold Open Closers & Magnets?
Hold Open Closers & Magnets (Fire/Life safety products) provide a wide range of solutions.  Single or multi-point hold open closers Utilize an electromechanical closer. Hold the door o...
What closer can be used with Soss invisible hinges?
Using Soss hinges with closers can require special device and preparation locations. If you have questions on specific closer applications, please e-mail your request (including a description ...
What is a 4430 / 4330?
The 4330 / 4430 is an obsolete ME closer replaced by the 4310ME or 4410ME Series.
How can I prevent putting the batteries in backwards in my AD four battery pack?
The original 4B battery holder used with the AD and CO Series products is updated to improve performance.  The issues addressed include: -    New ledges are added near eac...