closer limits height

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The regulation valves are designed to adjust the flow the hydraulic fluid in the closer which regulates the door closing speed through various phases of the closing cycle. The regulation valves h...
The maximum 925 tubing run length from the Control Box to the Door Closer is:  7980 Series Control Boxes --- 50 "Linear" feet from Control Box to Door Closer.  7900/7940 Series Control Boxes --...
Maximum reveal for a 4041 regular arm is 2-9/16". The reveal for a 4041 long arm is from 2-9/16" to 4-13/16". The reveal for a 4041 extra long arm (ELR) is from 4-13/16" to 8". ST-2523 is a sp...
The measurements from center line to centerline of the mounting holes are 2-3/8"  x  6-3/4".
LCN does not recommend this type of installation, and has never sold a coupler to do this.
A 4110 with AVB (advance variable back check) would be recommended. Using a SCUSH (Spring Cush) arm will also help minimize shock to all door hardware.
The size 6 handed closers will have the most (strongest) closing force. The 4016 (pull side), the 4026 (top jamb push side) or the 4116  (push side parallel arm)  have the highest closing force.
Standard templating will allow a 4110 closer to be mounted on 24" wide door.
The existing 373L control was modified and re-named as 379L to allow us to use the 55 rim device on an ADA door opening.  The 379L control is our 373L with different hex st...