Mortise Lock

A mortise lock fits into a deep pocket cut into the door edge, rather than through a round bore like a cylindrical lockset. That construction is why mortise locks are the standard for commercial buildings, schools, and apartment entries: the heavy cast or steel lock body withstands decades of high traffic, integrates deadbolt and latch in one unit, and offers far more functions (entry, classroom, storeroom, privacy, passage) than a cylindrical lock.

When choosing a mortise lock, start with the function you need on that door. An office function locks from outside while always allowing free egress. A storeroom function is always locked outside. An entrance function adds a deadbolt for after-hours security. Then confirm handing (left or right hand, regular or reverse bevel), backset, and whether you need it keyed into an existing system. Most of the mortise locks we sell accept standard or high-security cylinders, so you can upgrade key control without changing the lock body.

We carry Grade 1 commercial mortise locks from Marks USA, Sargent, Corbin Russwin, Yale, and others, including ornamental and storm-door mortise locks if your application is a gate or security screen door. If you're replacing an old mortise lock, send us a photo and measurements and we'll match it.

Mortise Lock

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  • LC-8248 OP 26D Sargent Manufacturing Mortise Lock LC-8248 OP 26D Sargent Manufacturing Mortise Lock
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    LC-8248 OP 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8248 OP 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
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    MSRP: $1,548.00
    $830.16
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  • Sargent 8251 LNE 26D Mortise Lock Sargent 8251 LNE 26D Mortise Lock
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    Sargent 8251 LNE 26D Mortise Lock

    Sargent
    MSRP: $1,792.00
    $952.64
    The Sargent 8251 LNE 26D is a heavy-duty mortise lock built for high-security commercial applications. Exceeding ANSI/BHMA Grade 1 standards, it delivers maximum strength and durability for offices, hospitals, schools, and behavioral health facilities...
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    MSRP: $1,792.00
    $952.64
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  • LC-8259 LNF 26D Sargent Manufacturing Mortise Lock LC-8259 LNF 26D Sargent Manufacturing Mortise Lock
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    LC-8259 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,581.00
    $844.02
    LC-8259 LNF 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
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    Qty in Cart: 0
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    Price:
    MSRP: $1,581.00
    $844.02
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  • Sargent 8200 LE1J 26D Mortise Lock, Grade 2 Sargent 8200 LE1J 26D Mortise Lock, Grade 2
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    Sargent 8200 LE1J 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,867.00
    $984.14
    The Sargent 8200 LE1J 26D is a heavy-duty mortise lock engineered for maximum security and durability in commercial applications. Exceeding ANSI/BHMA Grade 2 standards, it suits offices, hospitals, schools, and behavioral health facilities requiring...
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    MSRP: $1,867.00
    $984.14
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  • LC-8240 LNF 26D Sargent Manufacturing Mortise Lock LC-8240 LNF 26D Sargent Manufacturing Mortise Lock
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    LC-8240 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,618.00
    $859.56
    LC-8240 LNF 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
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    MSRP: $1,618.00
    $859.56
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  • LC-8237 LNA 26D LH Sargent Manufacturing Mortise Lock LC-8237 LNA 26D LH Sargent Manufacturing Mortise Lock
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    LC-8237 LNA 26D LH Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,553.00
    $832.26
    LC-8237 LNA 26D LH Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest...
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    MSRP: $1,553.00
    $832.26
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  • LC-8259 EL 26D Sargent Manufacturing Mortise Lock LC-8259 EL 26D Sargent Manufacturing Mortise Lock
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    LC-8259 EL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,530.00
    $822.60
    LC-8259 EL 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,530.00
    $822.60
    Subtotal:
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  • LC-8252 EL 26D Sargent Manufacturing Mortise Lock LC-8252 EL 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8252 EL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8252 EL 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,548.00
    $830.16
    Subtotal:
    Add to Cart
  • LC-8247 LNE 26D Sargent Manufacturing Mortise Lock LC-8247 LNE 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8247 LNE 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,646.00
    $871.32
    LC-8247 LNE 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,646.00
    $871.32
    Subtotal:
    Add to Cart
  • LC-8237 LNF 26D Sargent Manufacturing Mortise Lock LC-8237 LNF 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8237 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,553.00
    $832.26
    LC-8237 LNF 26D Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest and...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,553.00
    $832.26
    Subtotal:
    Add to Cart
  • Sargent 8256 LE1B 26D Mortise Lock, Grade 2 Sargent 8256 LE1B 26D Mortise Lock, Grade 2
    Quick view

    Sargent 8256 LE1B 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,818.00
    $963.56
    The Sargent 8256 LE1B 26D is a heavy-duty mortise lock engineered for commercial and institutional doors requiring maximum security and durability. Built to exceed ANSI/BHMA Grade 2 standards, it suits offices, hospitals, schools, and behavioral health...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,818.00
    $963.56
    Subtotal:
    Add to Cart
  • LC-8259 LNA 26D RH Sargent Manufacturing Mortise Lock LC-8259 LNA 26D RH Sargent Manufacturing Mortise Lock
    Quick view

    LC-8259 LNA 26D RH Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,581.00
    $844.02
    LC-8259 LNA 26D RH Sargent Manufacturing Mortise LockWhen it comes to strength and durability, SARGENT continues to set standards with the 8200 Mortise lock. The 8200 far surpasses ANSI/BHMA A156.13 Series 1000 Grade 1 standards, making it the strongest...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,581.00
    $844.02
    Subtotal:
    Add to Cart
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