*Actual product and finish may vary
The LCN 4020 Series grade 1 surface mounted door closers feature a modern design engineered for each application, easy installation, and superior performance.
The spring power of non-sized 4021 cylinder is adjustable from size 1 through size 5 and is shipped set to size 3. Sized 4020 series cylinders available in size 2, 3, 4, 5, or 6.
Packed w/ TBWMS (thru bolts, wood & machine screws)
LCN 4020 Series
The 4020 Smoothee® is LCN’s best performing heavy duty closer designed specifically for institutional and other rugged high traffic applications.
Features and Benefits
- Ten Million Cycles
- Cast Iron
- Forged Steel Main Arm
- Double Heat Treated Steel Pinion
- All Weather Fluid
- LCN ® Fast™ Power Adjust
- Fast & Accurate Installation
- UL & cUL Listed
- Standard 4020 series closer is shipped with regular arm, standard plastic cover, and self reaming and tapping screws. See the Options tab for options.
- Sized cylinders for interior doors to 5’0” and exterior doors to 4’0”.
- Non-sized cylinder (4021) adjustable for interior doors to 4’6” and exterior doors to 3’6”.
- Closer mounts top jamb (push side), specify right or left swinging door.
- 4021 cylinder meets ADA requirements.
- Standard or optional custom powder coat finish.
- Optional plated finish on metal cover, arm and fasteners.
- Optional SRI primer for installations in corrosive conditions is available with powder coat only.
- The 4020 Series is UL and cUL listed with regular or fusible link arms for self-closing doors.
- Tested and certified under ANSI Standard A156.4, grade one.
4021 LCN Door Closer (top jamb mount)
- Brand: LCN
- Product Code: 4021-REG