Lcn 4021REGALLH Door Closer Left Hand Top Jamb 689 Aluminum

Product Description

The LCN 4021REGALLH is a left-hand, top jamb, push-side mounted door closer designed for commercial and institutional door applications. It features adjustable closing force across sizes 1 through 5, allowing field technicians to dial in the appropriate sweep and latch speed for the door weight and traffic load. The closer ships with TBSRT thru bolts for secure mounting and is finished in 689 aluminum. At 9.7 pounds, the unit is a full-size commercial-grade closer suited for high-cycle environments. Installation is performed by a licensed door hardware technician or qualified commercial contractor.

The 4021REGALLH is intended for commercial interior and exterior doors in facilities such as schools, hospitals, government buildings, and other high-traffic institutional settings. The top jamb, push-side mount configuration is used when a standard parallel arm or regular arm mount is not feasible due to frame or clearance constraints. The adjustable size range of 1 through 5 accommodates a broad range of door widths and weights without requiring a different closer body.

Key Features

• Left-hand application with top jamb, push-side mounting configuration
• Adjustable closing force sizes 1 through 5 for field-tunable sweep and latch speed
• Includes TBSRT thru bolts for reinforced fastening through the door jamb
• 689 aluminum finish for compatibility with standard commercial aluminum frame hardware
• Full-size commercial closer body rated for high-traffic institutional environments

Compatibility

Designed as an OEM-style commercial door closer for left-hand, top jamb, push-side mount applications on standard commercial door frames. Consult door hardware schedules to confirm hand, mounting type, and frame construction before ordering.

Installation Notes

Installation should be performed by a qualified door hardware technician or commercial contractor familiar with ANSI A156.4 door closer standards. Before installation, confirm door hand and swing direction to ensure the correct mounting template is used. Secure all fasteners through the jamb using the supplied TBSRT thru bolts per the manufacturer template. Adjust sweep, latch, and backcheck valves with the door in operation to achieve the desired closing cycle before finalizing the installation.