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    • LCN Door Closers

    LCN: The Toughest Door Closers Ever Built

    If a door is heavy, high-traffic, or exposed to the wind, it needs an LCN. Known as the "Liquid Control Network," LCN produces closers that are tested to 10 million cycles -- ten times the industry standard. At Lock Depot, we recommend the LCN 4040XP as the "permanent solution" for doors that constantly break standard closers. When you install an LCN, you aren't just buying a closer; you're buying a decade of maintenance-free operation.

    We stock the full LCN lineup, from the heavy-duty 4000 Series to the 1460 Series for standard commercial use. We also specialize in LCN Automatic Operators (like the Senior Swing and Benchmark series), providing ADA-compliant, touchless entry solutions for hospitals and office buildings. If the door has to stay under control, it has to be LCN.

    PRO TIP: The "Cast Iron" Advantage

    Most modern closers use aluminum bodies to save cost. LCN uses Cast Iron. Why? Cast iron handles the internal pressures of a high-traffic door much better and won't strip out over time. If you're tired of "leakers" and slamming doors, upgrade to a cast-iron LCN 4040XP -- it's the last closer that door will ever need.

    LCN door closers and automatic operators ship from our warehouses across America. Heavy-duty closer specialists with ADA compliance expertise.

    Series Type Body Material Best For
    4040XP Heavy-Duty Closer Cast Iron High-Traffic / Exterior / Wind-Prone
    4040SE Security Closer Cast Iron Schools / Courthouses / Secure Entry
    1460 Series Standard Commercial Aluminum Office / Interior / Light Commercial
    Senior Swing Automatic Operator Electromechanical ADA / Hospitals / Touchless Entry
    Benchmark Automatic Operator Electromechanical High-Volume / Commercial ADA

    Top Sellers

    • Shop LCN 4040XP Heavy-Duty Cast Iron Closer
    • Shop LCN 1460 Series Standard Commercial Closer
    • Shop LCN Senior Swing & Benchmark Automatic Operators

    LCN Resource Hub

    LCN Door Closers FAQ

    Why is the LCN 4040XP considered the best door closer?

    The LCN 4040XP uses a cast iron body instead of aluminum, which handles internal hydraulic pressures far better over time. It is rated for 10 million cycles and features a full range of adjustments for sweep speed, latch speed, and backcheck. It is the industry standard for high-traffic exterior doors where cheaper closers constantly fail.

    What is an LCN automatic operator?

    An automatic operator is an electromechanical device that opens and closes a door automatically, typically activated by a push plate, motion sensor, or access control system. LCN's Senior Swing and Benchmark operators provide ADA-compliant, touchless entry for hospitals, offices, and public buildings where hands-free access is required.

    What is the difference between cast iron and aluminum closers?

    Cast iron bodies are denser and more resistant to the internal hydraulic pressures that build up over millions of cycles. Aluminum closers are lighter and less expensive but are more prone to fluid leaks and body failure under heavy use. For any door that sees more than moderate traffic, cast iron is the professional recommendation.

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