Is delay action available on track closers

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Regular LCN closers have "3" regulating valves for General Speed, Latch Speed, and Backcheck. If the LCN closer has "4" regulating valves, then the closer has the Delayed Action feature. De...
  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...
The 2030 closer requires a minimum 1-3/8" top rail on the door for the standard track.  For a top rail less than 1-3/8" and as narrow as 1", you could use the l...
AVB stands for Advanced Variable Backcheck. It is a cylinder option when ordering a 4111 closer (without an ST) that allows backcheck to start at about 45 degrees instead of the normal 75 degrees...