Product Description
LCN 4021 with Regular Arm Delayed Action Metal Cover in Aluminum
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 Aluminum finish — the standard architectural finish that blends with most commercial door frames.
| Brand | LCN (Allegion) |
| Part Number | 4021-REG-LH-AL-DEL-MC |
| Series | LCN 4021 |
| Arm Type | Regular Arm |
| Finish | Aluminum |
| 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.
Free Expert Support — As an authorized LCN distributor, Lock Depot provides full manufacturer warranty coverage and same day shipping on most orders. Call (877) 365-5625 for personalized help.
Image shown is representative of the product line. Actual finish, trim, and configuration may vary by SKU.
