LCN 4031 Surface Mounted Door Closer – Strength 1–4

Product Description

The LCN 4031 is a commercial-grade surface-mounted door closer designed for moderate-traffic swinging doors.

Part of the LCN 4030 Series, it features an adjustable strength 1–4 spring, cast-iron cylinder and independent controls for smooth, reliable door closing.

Key Features

• Adjustable spring strength 1–4
• Adjustable closing speed
• Adjustable latch speed
• Adjustable backcheck
• High-strength cast-iron cylinder
• Forged-steel arm
• All-weather hydraulic fluid
• ANSI/BHMA A156.4 Grade 1
• Suitable for timber, aluminium and metal swinging doors

Technical Information

• Model: LCN 4031
• Product code: LCC25189
• Finish: Aluminium
• Arm type: Regular arm
• Handing: Universal / non-handed
• Interior doors: Up to approximately 1219mm wide
• Exterior doors: Up to approximately 914mm wide
• Actual suitability depends on the door weight, hinges, seals, wind exposure and site conditions.

Machining / Drill-Out

• The closer can be installed in regular-arm, top-jamb or parallel-arm configurations, subject to the door and frame arrangement and the correct LCN installation template.
• Professional installation is recommended. The spring strength, closing speed, latch speed and backcheck must be adjusted correctly after installation.

Warranty Information

Covered by a 30-year limited mechanical warranty, subject to correct installation, normal use and LCN / Allegion warranty conditions.