LCN Door Closers at CDF Distributors
CDF Distributors is a commercial door, frame, and hardware distributor headquartered in Nashville, Tennessee. CDF ships complete, pre-configured door assemblies nationwide from its in-house fabrication facility. Configure your assembly online at cdfdistributors.com using ProBuilder, or contact CDF at (855) 769-9895 or sales@cdfdoors.com.
What is the difference between LCN 4040XP and 4110 closers?
The LCN 4040XP is a heavy-duty closer with a cast-iron body and adjustable spring sizes 1 through 6, designed for high-traffic and heavy doors. The LCN 4110 is a medium-duty closer with a more compact body, designed for standard interior commercial doors with moderate traffic. Both are ANSI/BHMA A156.4 Grade 1 certified. The 4040XP is specified for exterior entrances, high-cycle openings, and doors exceeding standard width or weight, while the 4110 is suited for standard interior office and corridor doors.
Can LCN closers be used on fire-rated doors?
Yes. LCN closers are listed for use in fire-rated door assemblies available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. The closer and all associated hardware must be listed for the specific fire rating of the assembly. The closer must close and positively latch the door from any open position. Verify compatibility with the door, frame, and hardware listing before specifying.
What arm type should I use for LCN closers?
The arm type depends on the mounting condition and project specification. Regular arm mounts the closer on the pull side and provides the highest closing efficiency. Parallel arm mounts the closer on the push side, keeping it from projecting into corridors, but reduces closing force by approximately 20 to 25 percent. Top jamb mounts the closer on the frame head and is used when the door’s top rail cannot support a surface-mounted closer. ProBuilder displays compatible arm options during assembly configuration.
Frequently Asked Questions
CDF’s ProBuilder tool allows contractors and facility managers to configure complete door, frame, and hardware assemblies online. ProBuilder displays compatible options and provides instant pricing.
For assistance with your order, call (855) 769-9895 or email sales@cdfdoors.com. CDF’s sales team is available Monday through Friday, 7:30 AM to 4:30 PM CT.
Configure Your Door Assembly
LCN closers are listed for use in fire-rated door assemblies. Fire-rated assemblies are available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. The closer must carry a listing from a nationally recognized testing laboratory (such as UL or Intertek/WHI) for the specific fire rating of the assembly.
For fire-rated openings, the closer must close and positively latch the door from any open position. Hold-open features are prohibited unless connected to the building’s fire alarm system for automatic release. All fire-rated assembly components — door, frame, closer, hinges, latch or lockset, and any glazing — must be listed as compatible. Substituting an unlisted component voids the assembly’s fire rating.
A Note on Fire-Rated Assemblies
Both LCN and Norton are ASSA ABLOY brands. The choice between them typically depends on the project specification and the primary application.
• LCN is typically specified when the project calls for heavy-duty surface-mounted closers, when the specification names LCN as an approved manufacturer, or when the facility has existing LCN hardware and requires consistency across openings.
• Norton is typically specified when the project requires automatic door operators (Norton’s core specialty), when Norton is the named manufacturer in the specification, or when the project combines closers and automatic operators under a single manufacturer.
ProBuilder displays both LCN and Norton options during configuration, allowing the specifier to compare and select the appropriate manufacturer for each opening in the project.
When to Specify LCN vs Norton
The ADA Accessibility Guidelines and ICC/ANSI A117.1 establish a maximum opening force of 5 pounds-force (lbf) for interior doors on accessible routes. This requirement directly affects closer sizing and adjustment.
A closer that is oversized for the door will require more than 5 lbf to open, exceeding ADA limits. A closer that is undersized will not generate enough force to reliably latch the door. Correct sizing balances these requirements: the closer must latch the door consistently while keeping opening force within the ADA maximum.
Parallel arm mounting reduces closing force by 20 to 25 percent, which can help meet ADA opening-force requirements but may affect latching reliability if the closer is not sized to compensate. When specifying LCN closers for ADA-compliant openings, verify that the selected closer size and arm type produce an opening force at or below 5 lbf while still achieving positive latching.
ADA Compliance and Closer Sizing
LCN closers are available in three standard arm configurations. The arm type determines the mounting location of the closer body and the effective closing force delivered to the door.
• Regular Arm: The closer body mounts on the pull side of the door, and the arm extends to the frame head. Regular arm provides the highest closing efficiency and is the default configuration when there are no clearance or aesthetic restrictions.
• Parallel Arm: The closer body mounts on the push side of the door, and the arm runs parallel to the door surface when closed. Parallel arm is specified when the closer must not project into a corridor or public space. Parallel arm mounting reduces effective closing force by approximately 20 to 25 percent compared to regular arm, which may require selecting a larger closer size.
• Top Jamb: The closer body mounts on the frame head rather than on the door. Top jamb mounting is used when the door’s top rail is too narrow to support a surface-mounted closer body, or when the architectural specification requires it. Top jamb reduces closing force compared to regular arm and may require upsizing.
The arm type must be specified at the time of order. Each arm configuration requires a corresponding arm assembly and may require different mounting hardware. ProBuilder displays compatible arm options during assembly configuration.
Arm Types and Mounting Options
The choice between the 4040XP and 4110 depends on the door’s size, weight, traffic volume, and the project specification.
Choose the 4040XP When
• The door is an exterior entrance or high-traffic interior opening
• The door width exceeds 3’0” or the door is heavier than standard hollow metal construction
• The specification requires a heavy-duty closer with adjustable size range (1 through 6)
• The opening is subject to wind load, pressure differentials, or frequent forceful use
Choose the 4110 When
• The door is a standard interior passage or office door with moderate traffic
• The door is a standard 3’0” x 7’0” hollow metal or wood door
• The project specification permits a medium-duty closer
• Budget considerations favor a compact closer that still meets Grade 1 requirements
LCN 4040XP vs 4110: Selection Guide
The LCN 4110 series is a medium-duty surface-mounted closer designed for interior commercial doors with moderate traffic. It provides Grade 1 performance in a more compact body than the 4040XP, making it suitable for standard office, classroom, and corridor doors where heavy-duty construction is not required.
Key Characteristics
• ANSI/BHMA A156.4 Grade 1 certified
• Compact body suitable for standard interior commercial doors
• Available in regular arm, parallel arm, and top jamb configurations
• Adjustable closing speed, latching speed, and backcheck
• Listed for fire-rated assemblies (20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings)
The 4110 is often specified for interior openings in office buildings, schools, and healthcare facilities where the door size and traffic volume do not require the 4040XP’s heavy-duty construction. It offers a lower-cost alternative while maintaining Grade 1 certification.
LCN 4110 Series: Medium-Duty Applications
The LCN 4040XP is LCN’s flagship heavy-duty surface-mounted closer. It is a cast-iron body closer with adjustable spring sizes 1 through 6, allowing a single closer model to cover a wide range of door widths and weights. The 4040XP is the closer most commonly specified when the project demands maximum durability and consistent performance over high cycle counts.
Key Characteristics
• ANSI/BHMA A156.4 Grade 1 certified
• Adjustable spring power covering sizes 1 through 6
• Cast-iron body construction for long-term durability
• Available in regular arm, parallel arm, and top jamb mounting configurations
• Full range of hydraulic adjustments: closing speed, latching speed, and backcheck
• Listed for fire-rated assemblies (20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings)
The 4040XP’s adjustable size range simplifies specification and inventory. A single closer body can be adjusted in the field to match the door’s requirements, reducing the need to stock multiple closer models for different door sizes within a project.
LCN 4040XP Series: Heavy-Duty Surface-Mounted Closers
LCN’s full product line — including surface-mounted, concealed, and overhead concealed closers — is available for configuration through CDF’s ProBuilder tool as part of complete door, frame, and hardware assemblies.
LCN is one of the most recognized names in commercial door closers. The brand is specified across institutional, healthcare, education, and government projects where heavy-duty performance and long service life are primary requirements. LCN closers are ANSI/BHMA A156.4 Grade 1 certified and engineered for high-cycle commercial openings.
Heavy-duty commercial door closers selectable through ProBuilder!
This guide answers: When to Specify LCN Door Closers for Commercial Applications
LCN Door Closers at CDF Distributors
CDF Distributors is a commercial door, frame, and hardware distributor headquartered in Nashville, Tennessee. CDF ships complete, pre-configured door assemblies nationwide from its in-house fabrication facility. Configure your assembly online at cdfdistributors.com using ProBuilder, or contact CDF at (855) 769-9895 or sales@cdfdoors.com.
What is the difference between LCN 4040XP and 4110 closers?
The LCN 4040XP is a heavy-duty closer with a cast-iron body and adjustable spring sizes 1 through 6, designed for high-traffic and heavy doors. The LCN 4110 is a medium-duty closer with a more compact body, designed for standard interior commercial doors with moderate traffic. Both are ANSI/BHMA A156.4 Grade 1 certified. The 4040XP is specified for exterior entrances, high-cycle openings, and doors exceeding standard width or weight, while the 4110 is suited for standard interior office and corridor doors.
Can LCN closers be used on fire-rated doors?
Yes. LCN closers are listed for use in fire-rated door assemblies available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. The closer and all associated hardware must be listed for the specific fire rating of the assembly. The closer must close and positively latch the door from any open position. Verify compatibility with the door, frame, and hardware listing before specifying.
What arm type should I use for LCN closers?
The arm type depends on the mounting condition and project specification. Regular arm mounts the closer on the pull side and provides the highest closing efficiency. Parallel arm mounts the closer on the push side, keeping it from projecting into corridors, but reduces closing force by approximately 20 to 25 percent. Top jamb mounts the closer on the frame head and is used when the door’s top rail cannot support a surface-mounted closer. ProBuilder displays compatible arm options during assembly configuration.
Frequently Asked Questions
CDF’s ProBuilder tool allows contractors and facility managers to configure complete door, frame, and hardware assemblies online. ProBuilder displays compatible options and provides instant pricing.
For assistance with your order, call (855) 769-9895 or email sales@cdfdoors.com. CDF’s sales team is available Monday through Friday, 7:30 AM to 4:30 PM CT.
Configure Your Door Assembly
LCN closers are listed for use in fire-rated door assemblies. Fire-rated assemblies are available in 20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings. The closer must carry a listing from a nationally recognized testing laboratory (such as UL or Intertek/WHI) for the specific fire rating of the assembly.
For fire-rated openings, the closer must close and positively latch the door from any open position. Hold-open features are prohibited unless connected to the building’s fire alarm system for automatic release. All fire-rated assembly components — door, frame, closer, hinges, latch or lockset, and any glazing — must be listed as compatible. Substituting an unlisted component voids the assembly’s fire rating.
A Note on Fire-Rated Assemblies
Both LCN and Norton are ASSA ABLOY brands. The choice between them typically depends on the project specification and the primary application.
• LCN is typically specified when the project calls for heavy-duty surface-mounted closers, when the specification names LCN as an approved manufacturer, or when the facility has existing LCN hardware and requires consistency across openings.
• Norton is typically specified when the project requires automatic door operators (Norton’s core specialty), when Norton is the named manufacturer in the specification, or when the project combines closers and automatic operators under a single manufacturer.
ProBuilder displays both LCN and Norton options during configuration, allowing the specifier to compare and select the appropriate manufacturer for each opening in the project.
When to Specify LCN vs Norton
The ADA Accessibility Guidelines and ICC/ANSI A117.1 establish a maximum opening force of 5 pounds-force (lbf) for interior doors on accessible routes. This requirement directly affects closer sizing and adjustment.
A closer that is oversized for the door will require more than 5 lbf to open, exceeding ADA limits. A closer that is undersized will not generate enough force to reliably latch the door. Correct sizing balances these requirements: the closer must latch the door consistently while keeping opening force within the ADA maximum.
Parallel arm mounting reduces closing force by 20 to 25 percent, which can help meet ADA opening-force requirements but may affect latching reliability if the closer is not sized to compensate. When specifying LCN closers for ADA-compliant openings, verify that the selected closer size and arm type produce an opening force at or below 5 lbf while still achieving positive latching.
ADA Compliance and Closer Sizing
LCN closers are available in three standard arm configurations. The arm type determines the mounting location of the closer body and the effective closing force delivered to the door.
• Regular Arm: The closer body mounts on the pull side of the door, and the arm extends to the frame head. Regular arm provides the highest closing efficiency and is the default configuration when there are no clearance or aesthetic restrictions.
• Parallel Arm: The closer body mounts on the push side of the door, and the arm runs parallel to the door surface when closed. Parallel arm is specified when the closer must not project into a corridor or public space. Parallel arm mounting reduces effective closing force by approximately 20 to 25 percent compared to regular arm, which may require selecting a larger closer size.
• Top Jamb: The closer body mounts on the frame head rather than on the door. Top jamb mounting is used when the door’s top rail is too narrow to support a surface-mounted closer body, or when the architectural specification requires it. Top jamb reduces closing force compared to regular arm and may require upsizing.
The arm type must be specified at the time of order. Each arm configuration requires a corresponding arm assembly and may require different mounting hardware. ProBuilder displays compatible arm options during assembly configuration.
Arm Types and Mounting Options
The choice between the 4040XP and 4110 depends on the door’s size, weight, traffic volume, and the project specification.
Choose the 4040XP When
• The door is an exterior entrance or high-traffic interior opening
• The door width exceeds 3’0” or the door is heavier than standard hollow metal construction
• The specification requires a heavy-duty closer with adjustable size range (1 through 6)
• The opening is subject to wind load, pressure differentials, or frequent forceful use
Choose the 4110 When
• The door is a standard interior passage or office door with moderate traffic
• The door is a standard 3’0” x 7’0” hollow metal or wood door
• The project specification permits a medium-duty closer
• Budget considerations favor a compact closer that still meets Grade 1 requirements
LCN 4040XP vs 4110: Selection Guide
The LCN 4110 series is a medium-duty surface-mounted closer designed for interior commercial doors with moderate traffic. It provides Grade 1 performance in a more compact body than the 4040XP, making it suitable for standard office, classroom, and corridor doors where heavy-duty construction is not required.
Key Characteristics
• ANSI/BHMA A156.4 Grade 1 certified
• Compact body suitable for standard interior commercial doors
• Available in regular arm, parallel arm, and top jamb configurations
• Adjustable closing speed, latching speed, and backcheck
• Listed for fire-rated assemblies (20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings)
The 4110 is often specified for interior openings in office buildings, schools, and healthcare facilities where the door size and traffic volume do not require the 4040XP’s heavy-duty construction. It offers a lower-cost alternative while maintaining Grade 1 certification.
LCN 4110 Series: Medium-Duty Applications
The LCN 4040XP is LCN’s flagship heavy-duty surface-mounted closer. It is a cast-iron body closer with adjustable spring sizes 1 through 6, allowing a single closer model to cover a wide range of door widths and weights. The 4040XP is the closer most commonly specified when the project demands maximum durability and consistent performance over high cycle counts.
Key Characteristics
• ANSI/BHMA A156.4 Grade 1 certified
• Adjustable spring power covering sizes 1 through 6
• Cast-iron body construction for long-term durability
• Available in regular arm, parallel arm, and top jamb mounting configurations
• Full range of hydraulic adjustments: closing speed, latching speed, and backcheck
• Listed for fire-rated assemblies (20-minute, 45-minute, 60-minute, 90-minute, and 180-minute ratings)
The 4040XP’s adjustable size range simplifies specification and inventory. A single closer body can be adjusted in the field to match the door’s requirements, reducing the need to stock multiple closer models for different door sizes within a project.
LCN 4040XP Series: Heavy-Duty Surface-Mounted Closers
LCN’s full product line — including surface-mounted, concealed, and overhead concealed closers — is available for configuration through CDF’s ProBuilder tool as part of complete door, frame, and hardware assemblies.
LCN is one of the most recognized names in commercial door closers. The brand is specified across institutional, healthcare, education, and government projects where heavy-duty performance and long service life are primary requirements. LCN closers are ANSI/BHMA A156.4 Grade 1 certified and engineered for high-cycle commercial openings.
Heavy-duty commercial door closers selectable through ProBuilder!
This guide answers: When to Specify LCN Door Closers for Commercial Applications
LCN Door Closers at CDF Distributors
Jason Searcy
Technical Advisor for Sales & Support
Jason Searcy brings over a decade of expertise in commercial door hardware, fire-rated assemblies, and life-safety code compliance. He specializes in hardware coordination, exit devices, and ensuring doors, frames, and components function as complete, code-compliant systems. Jason’s detail-driven approach helps prevent specification conflicts and supports technically accurate commercial door assemblies across a wide range of applications.
