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-8237 LNB 10B Sargent Manufacturing Mortise Lock LC-8237 LNB 10B Sargent Manufacturing Mortise Lock
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    LC-8237 LNB 10B Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,532.00
    $823.44
    LC-8237 LNB 10B 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,532.00
    $823.44
    Subtotal:
  • Sargent 8237 LE1B 10B Mortise Lock, Grade 2 Sargent 8237 LE1B 10B Mortise Lock, Grade 2
    Quick view

    Sargent 8237 LE1B 10B Mortise Lock, Grade 2

    Sargent
    MSRP: $1,014.00
    $555.88
    The Sargent 8237 is a heavy-duty mortise lock engineered for commercial and institutional doors requiring maximum security and reliability. Built to ANSI/BHMA Grade 2 standards and UL-listed for three-hour fire doors, it delivers superior strength for...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,014.00
    $555.88
    Subtotal:
  • Sargent 8237 LNJ 10B Mortise Lock Grade 2 Sargent 8237 LNJ 10B Mortise Lock Grade 2
    Quick view

    Sargent 8237 LNJ 10B Mortise Lock Grade 2

    Sargent
    MSRP: $1,632.00
    $865.44
    The Sargent 8237 is a heavy-duty mortise lock engineered for commercial and institutional doors requiring maximum security and durability. It exceeds ANSI/BHMA Grade 2 standards and is UL-listed for three-hour fire doors and windstorm applications,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,632.00
    $865.44
    Subtotal:
  • LC-8204 LNB 10B Sargent Manufacturing Mortise Lock LC-8204 LNB 10B Sargent Manufacturing Mortise Lock
    Quick view

    LC-8204 LNB 10B Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,532.00
    $823.44
    LC-8204 LNB 10B 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,532.00
    $823.44
    Subtotal:
  • Sargent 8237 LNB 26D Mortise Lock, Grade 2 Sargent 8237 LNB 26D Mortise Lock, Grade 2
    Quick view

    Sargent 8237 LNB 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,654.00
    $874.68
    The Sargent 8237 LNB 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 delivers superior strength for offices, hospitals, schools,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,654.00
    $874.68
    Subtotal:
  • Sargent 8200 TR-8205 LNL 10B Mortise Lock Sargent 8200 TR-8205 LNL 10B Mortise Lock
    Quick view

    Sargent 8200 TR-8205 LNL 10B Mortise Lock

    Sargent
    MSRP: $885.00
    $491.70
    The Sargent 8200 mortise lock delivers Grade 1 security and durability for high-traffic commercial doors. Built for offices, hospitals, schools, and behavioral health facilities, this lock exceeds ANSI/BHMA A156.13 standards and resists vandalism and...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $885.00
    $491.70
    Subtotal:
  • V01-8225 LNL 26D Sargent Manufacturing Mortise Lock V01-8225 LNL 26D Sargent Manufacturing Mortise Lock
    Quick view

    V01-8225 LNL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,928.00
    $1,089.76
    V01-8225 LNL 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,928.00
    $1,089.76
    Subtotal:
  • V01-8205 LNL 26D Sargent Manufacturing Mortise Lock V01-8205 LNL 26D Sargent Manufacturing Mortise Lock
    Quick view

    V01-8205 LNL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,849.00
    $976.58
    V01-8205 LNL 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,849.00
    $976.58
    Subtotal:
  • Sargent 8200 LE1B 10B Mortise Lock Sargent 8200 LE1B 10B Mortise Lock
    Quick view

    Sargent 8200 LE1B 10B Mortise Lock

    Sargent
    MSRP: $1,806.00
    $958.52
    The Sargent 8200 mortise lock delivers Grade 2 certified security and durability for commercial doors in offices, hospitals, schools, and institutional settings. Exceeding ANSI/BHMA A156.13 standards, this heavy-duty lock resists unauthorized entry and...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,806.00
    $958.52
    Subtotal:
  • LC-8237 LNL 26D Sargent Manufacturing Mortise Lock LC-8237 LNL 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8237 LNL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,508.00
    $813.36
    LC-8237 LNL 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,508.00
    $813.36
    Subtotal:
  • Sargent 8200 26D Mortise Lock, Grade 2 Sargent 8200 26D Mortise Lock, Grade 2
    Quick view

    Sargent 8200 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,654.00
    $874.68
    The Sargent 8200 mortise lock is a heavy-duty access control solution for commercial buildings, hospitals, schools, and behavioral health facilities. This Grade 2 certified lock exceeds ANSI/BHMA A156.13 standards, delivering superior strength,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,654.00
    $874.68
    Subtotal:
  • LC-8255 LNL 26D Sargent Manufacturing Mortise Lock LC-8255 LNL 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8255 LNL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,508.00
    $813.36
    LC-8255 LNL 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,508.00
    $813.36
    Subtotal:
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