Subscribe to be notified about products, launches, special offers and news.
Select the account type that best suits your needs.
Contractors
Trade Professionals
Large Corporate
General Business
Military / Government
Institutional
Hospitals
Behavioral Health
K-12 Higher Learning
GSA Contract
Already have an account? Sign in
The LCN 4010-18-689 Drop Plate is a heavy-duty mounting adapter designed specifically for use with the LCN 4010 Series surface closer in commercial and institutional applications. Engineered for narrow top rail and flush ceiling conditions, this drop plate is required when the door’s top rail measures less than 3-3/4" (95 mm) and requires a minimum 2" (51 mm) rail for secure installation. Constructed from durable steel and finished in 689 (US28) Aluminum Painted for a clean matte silver appearance, the 4010-18-689 ensures proper closer mounting while maintaining ANSI/BHMA Grade 1 performance when paired with the 4010 closer. Ideal for schools, hospitals, government buildings, and high-traffic facilities, this LCN drop plate delivers reliable reinforcement and professional-grade installation flexibility.
Features:
| Manufacturer | LCN |
| SKU | 4010-18-689 |
| Installation | Commercial |
| Unit of Measure | Each |
| Base Material | Steel |
| BAA Qualified | Yes |
| Finish | 689/US28 |
| Finish Description | Aluminum Painted |
| Finish Family | Matte Silver |
| Product Type | Door Closer Mounting Plates |
| Grade | ANSI/BHMA A156.4, Grade 1 |
| Durability | Designed for "Rugged High Traffic" and institutional applications. |
| Top Rail Requirements | Required when top rail is less than 3-3/4" (95 mm); minimum 2" (51 mm) top rail required for installation. |



