The LCN 4011 surface mount closer installs on the pull side of the door frame and controls high-traffic commercial openings. This Grade 1 closer handles doors up to 32 inches wide with its size 1 spring and maintains the 5 pound maximum opening force required for ADA compliance. The forged steel main arm and double heat treated pinion deliver reliable performance in demanding environments.
Cast iron construction with all weather fluid ensures consistent operation through temperature extremes. The left hand unit mounts with thru-bolt templates for secure attachment to hollow metal frames. Dark bronze finish matches commercial hardware standards while the heavy-duty design cycles through hundreds of thousands of operations.
| Series | 4010 Series |
|---|---|
| ANSI Grade | Grade 1 |
| Mounting | Surface Mount Pull Side |
| Handing | Left Hand |
| Finish | 695 Dark Bronze |
| Material | Cast Iron |
This closer meets ANSI/BHMA A156.4 Grade 1 standards and carries UL listing for fire-rated door applications. The size 1 spring provides proper closing force for standard commercial doors while meeting accessibility requirements.
For guidance on matching closer spring sizes to door dimensions, see the Door Closer Selection Guide. The ANSI A156.4 door closer standards detail Grade 1 performance requirements and ADA opening force limits.