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.

Product Details

• Model: LCN 4031
• Product code: LCC25189
• Finish: Aluminium
• Arm type: Regular arm
• Handing: Universal / non-handed

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

Door Size Guide

• 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.

Installation Information

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.