LCN 4021 Heavy Duty Surface-Mounted Door Closer with Plated Finish

LCN 4021 Heavy Duty Surface-Mounted Door Closer with Plated Finish

Professional Heavy-Duty Door Closing Solution

The LCN 4021 Heavy Duty Surface-Mounted Door Closer delivers reliable performance for high-traffic commercial applications. This ANSI/BHMA Grade 1 certified closer features adjustable spring power using the patented LCN Green Dial system, accommodating interior doors up to 5'0" and exterior doors up to 4'0". Built with cast iron cylinder construction and a 1-1/2" diameter piston, this closer meets UL and cUL listing requirements and includes a comprehensive 30-year warranty.

Professional Features & Benefits

• Door Size Compatibility: Sized cylinders accommodate interior doors to 5'0" and exterior doors to 4'0" for versatile installation options.
• Heavy-Duty Construction: Cast iron cylinder with full-complement bearing and 1-1/2" diameter piston provides exceptional durability for commercial applications.
• Adjustable Spring Power: LCN patented Green Dial Spring force indicator eliminates guesswork during adjustment and creates custom fit for specific application demands.
• Premium Plated Finish: Optional plated finish on metal cover, arm and fasteners provides enhanced appearance and corrosion resistance.
• Grade 1 Certification: Tested and certified under ANSI/BHMA A156.4 Grade 1 standards for demanding commercial installations.
• All-Weather Performance: All-weather fluid ensures reliable operation in varying environmental conditions.
• Comprehensive Warranty: 30-year warranty provides long-term confidence and protection for commercial applications.
• ADA Compliance: Meets ADA requirements for accessible door operation in commercial facilities.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose LCN Quality?

LCN door closer products deliver professional-grade reliability with cast iron cylinder construction and double heat-treated steel pinion journal rated for demanding commercial use. The comprehensive 30-year warranty demonstrates LCN's commitment to long-term performance. Engineered for demanding commercial applications where dependable performance is essential.

Product Documentation & Resources

• [Catalog] LCN Full Line Catalog