The LCN 4011 Smoothee is a Grade 1 surface mount door closer designed for pull side installation on heavy commercial doors. This size 1 closer handles doors up to standard width while meeting the demanding cycle requirements of high-traffic entrances. The cast iron body with forged steel main arm construction provides the durability needed for institutional and commercial applications where reliable door control matters.
The double heat treated steel pinion and all-weather fluid keep this closer operating smoothly across temperature extremes. Left hand configuration means the closer mounts on the pull side when the door swings away from you on the left. The TBSRT thru-bolt mounting system creates a secure attachment point that withstands heavy use without loosening over time.
| Series | 4010 Series |
|---|---|
| Grade | Grade 1 - ANSI A156.4 |
| Mounting | Surface Mount Pull Side |
| Handing | Left Hand |
| Finish | Black (693) |
| Material | Cast Iron |
This closer meets ANSI/BHMA A156.4 Grade 1 standards and carries UL listing for fire-rated door applications where code compliance is required.
Size 1 spring sizing works for most standard door widths as detailed in our door closer selection guide. For understanding the performance requirements behind Grade 1 vs Grade 2 door closers, including the ADA 5 lbs opening force requirement, refer to the ANSI A156.4 standard specifications.