Product Description
LCN 4021 with Regular Arm Delayed Action in Bright Brass
The LCN 4021 is the heavy-duty closer for demanding commercial applications. Built on the same platform as the 4011, the 4021 adds delayed action — the door stays open briefly before starting its closing cycle, giving people extra time to pass through. Ships in Bright Brass finish — for openings with brass hardware and trim.
| Brand | LCN (Allegion) |
| Part Number | 4021-REG-LH-BRASS-DEL |
| Series | LCN 4021 |
| Arm Type | Regular Arm |
| Finish | Bright Brass |
| Handing | Left Hand (LH) |
| Fire Rating | Non Fire Rated |
| UL Listed | Yes — UL Listed for fire-rated door assemblies |
| Spring Power | Size 1-6 |
| Warranty | 3 years limited manufacturer's warranty |
- Delayed action holds door open briefly before closing cycle begins
- Ideal for high-traffic corridors and ADA-accessible routes
- Size 1-6 adjustable spring power
- Cast iron body built for institutional and commercial abuse
Works With: Updated version of the LCN 4020. Same prep, same footprint. For replacement parts, arms, and covers, search LCN 4021 on our site.
Authorized LCN Distributor — Lock Depot is an authorized LCN dealer. Every product ships brand new in original manufacturer packaging with full factory warranty. Contact us or call (877) 365-5625 for expert assistance.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
