what grade closer is LCN

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The old 4030/4130 closers and arms are obsolete, there is nothing to replace them. No arm from other closers will fit  There is no closer that can replace the old 4030 series closer with the exa...
It would be unnecessary to use the CNS/Cush arm and the Glynn Johnson overhead devices in the same application, both mechanisms stop the door.
LCN does not recommend this type of installation, and has never sold a coupler to do this.
  How to:  What are the steps to adjust a door closer?   Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment.  All cl...
  Product shipped on or after Feb. 8th, 2016 The "3034" and "3034H" are internal part designation that LCN uses to specify regular (3034) and hold open ...
On Feb 8th, 2016 - LCN launched the redesign of the Hold open clip which changed multiple components of our Track style closers, including the roller, track, hold open clip, and bumper.   
The 4040XP, 1260/1261, 1460/1461, 4030/4031 closers have the tri-pack mounting option when ordered with an Rw/PA or Hw/PA designation.