LCN 4040XP Overhead Door Closer | EN 1-5

LCN 4040XP Door Closer: Adjustable, Heavy Duty, Fire Rated

The LCN 4040XP is a heavy duty door closer designed to perform where others fail. The XP model from the LCN 4040 series delivers reliability in areas with high traffic, frequent abuse, or fire safety requirements. With an adjustable EN 1–5 power size range, fire performance for timber and metal doors, and components engineered for long service life, this closer suits high use commercial doors in schools, hospitals, and public buildings. 

From project specification through to installation and ongoing maintenance, the LCN 4040XP is engineered to minimise fitting time, reduce the risk of adjustment errors, and support compliance with fire safety standards.

Key Product Features:

• LCN 4040XP.US28 door closer
• Heavy duty
• Spring adjustable power size EN 1-5 (ANSI 1-6)
• Universal unit installation:

          Fig. 1/61 – Pull side mounting/transom mounting*
          Fig. 66 – Push side mounting 

• Backcheck
• Stronger pinion teeth
• Double heat treated steel pinion
• Liquid X fluid reduces the need for seasonal adjustment
• Green dial: visual power spring adjustment aid
• New V-shield™ seal with 20% longer life
• XP = eXtra Protection in real-world applications
• LCN peel and stick installation template
• QR code for easy access to instructions
• Non-handed
• Cast iron body
• Plastic cover
• Forged steel scissor arm
• Tested to BS EN 1154
• Tested to BS EN 1634-1:2014 

          Timber fire doors up to 120 minutes
          Steel fire doors up to 60 minutes

• UKCA marked
• CE marked
• Suits doors under 102kg
• Silver finish

*The CE and UKCA do not apply to Fig. 61 transom installation.

Designed for Strength, Built for Real World Demands

The LCN 4040XP closer is engineered to withstand daily use in high traffic, high abuse settings, from hospital corridors to busy school entrances. Components have been refined to provide consistent performance over time, while reducing installation time and ongoing maintenance.

Internally, the closer features:

• A double heat treated steel pinion for greater wear resistance
• Full-complement bearings with 0.5" minimum height, reducing leakage and ensuring even wear
• Forged steel scissor arm to resist bending and failure
• Tight manufacturing tolerances for accuracy and reliable performance

All internal components are designed to work together to reduce friction, extend service life, and provide controlled, predictable door movement.

The closer is filled with Liquid X all-weather fluid, which reduces the need for seasonal adjustment. This provides reliable door closing speeds in varying temperatures, whether installed in a heated corridor or a draught-prone entrance lobby.

Tested for Fire Door Compliance

The LCN 4040 XP is independently tested and certified for use on fire doors. It complies with both BS EN 1154 and BS EN 1634-1, and carries the UKCA and CE marks. For UK installations, always set the door closer using the EN power sizes as defined by BS EN 1154. The minimum EN power size required for use on a fire door is EN 3.

This closer has been tested to BS EN 1634-1 for:

• Timber fire doors rated up to 120 minutes
• Steel fire doors rated up to 60 minutes

Important note: CE and UKCA certification do not apply when the closer is installed in Fig. 61 transom mounting. If used on a fire door, it must be installed in an approved mounting configuration. 

You should always refer to the fire test evidence for your door to ensure compliance.

To complete your fire door installation, explore our fire door ironmongery range, including:

• Fire rated hinges, locks, and latches
• Intumescent protection kits for door hardware
• Fire door signage 

Built for Ease of Installation and Adjustment

The LCN 4040XP is a universal installation unit and non-handed, reducing the need to stock multiple variants and simplifying specification across multiple door types across a building.

A peel-and-stick installation template is included, saving time and designed to improve accuracy during fitting. Once installed, the Green Dial provides a clear, visual indication of the spring power setting, helping reduce guesswork during setup or adjustment during maintenance.

In addition, the closer includes clearly labelled adjustment valves for latch speed, closing speed, and backcheck. These are supported by a positive stop feature to prevent accidental damage during adjustment.

A QR code on the closer body links directly to interactive fitting guides and technical resources.

A Long Term Solution for Demanding Doors

The LCN 4040XP is a high performance closer that delivers consistent control in environments where safety, durability, and compliance are critical. Its heavy duty build, adjustable EN 1–5 power, and fire certification make it ideal for doors in public buildings, commercial spaces, healthcare settings, and educational facilities.

For other areas of your facility, the wider LCN door closer range offers solutions for different door types and usage levels:

• LCN 1261: a reliable option for low to medium duty internal doors
• LCN 1461: suitable for medium duty internal and perimeter doors

Explore our full door closer range to find the right solution for every door, or contact our team for expert advice.