This heavy duty parallel arm closer mounts on the push side of the door frame and handles high-traffic commercial applications where consistent closing force matters. The LCN 4111 series delivers Grade 1 performance for doors that see constant use in office buildings, schools, and retail spaces. The parallel arm design keeps the closer body off the door face while providing reliable self-closing action that meets fire code requirements.
Built with forged steel main arm and double heat treated steel pinion, this closer handles spring sizes 1-5 with field-adjustable sweep and latch control. The cast iron body uses all weather fluid that works in temperature extremes. Left hand configuration means the closer mounts on the left side when viewed from the push side of the door.
| Series | 4110 |
|---|---|
| Grade | Grade 1 - ANSI A156.4 |
| Mount | Push Side Parallel Arm |
| Handing | Left Hand |
| Finish | 689 Aluminum |
| Material | Cast Iron Body |
This closer meets ANSI/BHMA A156.4 Grade 1 standards and carries UL listing for fire door applications. Grade 1 closers provide the durability needed for heavy commercial use.
Proper spring sizing depends on door width and weight - Door Closer Selection Guide covers spring size selection and adjustment procedures. For fire door installations, ANSI A156.4 door closer standards define the Grade 1 performance requirements this closer meets.