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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  • Sargent 8217 LNA 26D Mortise Lock, Left Hand Sargent 8217 LNA 26D Mortise Lock, Left Hand
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    Sargent 8217 LNA 26D Mortise Lock, Left Hand

    Sargent
    MSRP: $1,873.00
    $986.66
    The Sargent 8217 LNA 26D is a heavy-duty mortise lock engineered for institutional and commercial applications requiring maximum security and durability. Exceeding ANSI/BHMA Grade 2 standards, it delivers proven performance in offices, hospitals,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,873.00
    $986.66
    Subtotal:
  • Sargent 8237 Mortise Lock, 26D Finish, Grade 2 Sargent 8237 Mortise Lock, 26D Finish, Grade 2
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    Sargent 8237 Mortise Lock, 26D Finish, Grade 2

    Sargent
    MSRP: $891.00
    $494.22
    The Sargent 8237 is a heavy-duty mortise lock engineered for high-security commercial and institutional applications. Built to exceed ANSI/BHMA Grade 2 standards, it delivers superior strength and durability for offices, hospitals, schools, and...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $891.00
    $494.22
    Subtotal:
  • LC-8224 LL 26D Sargent Manufacturing Mortise Lock LC-8224 LL 26D Sargent Manufacturing Mortise Lock
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    LC-8224 LL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,587.00
    $846.54
    LC-8224 LL 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: $1,587.00
    $846.54
    Subtotal:
  • LC-8255 WTL 26D Sargent Manufacturing Mortise Lock LC-8255 WTL 26D Sargent Manufacturing Mortise Lock
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    LC-8255 WTL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,452.00
    $789.84
    LC-8255 WTL 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: $1,452.00
    $789.84
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  • LC-8239 LB 26D Sargent Manufacturing Mortise Lock LC-8239 LB 26D Sargent Manufacturing Mortise Lock
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    LC-8239 LB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8239 LB 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: $1,548.00
    $830.16
    Subtotal:
  • LC-8240 LNB 26D Sargent Manufacturing Mortise Lock LC-8240 LNB 26D Sargent Manufacturing Mortise Lock
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    LC-8240 LNB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8240 LNB 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: $1,548.00
    $830.16
    Subtotal:
  • Sargent 8200 LE1L Mortise Lock, 26D Satin Chrome Sargent 8200 LE1L Mortise Lock, 26D Satin Chrome
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    Sargent 8200 LE1L Mortise Lock, 26D Satin Chrome

    Sargent
    MSRP: $1,867.00
    $984.14
    The Sargent 8200 LE1L is a heavy-duty mortise lock engineered for institutional and commercial facilities demanding maximum security and durability. Exceeding ANSI/BHMA Grade 2 standards, it resists tampering and wear in high-traffic environments like...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,867.00
    $984.14
    Subtotal:
  • Sargent 8226 OP 26D Mortise Lock Sargent 8226 OP 26D Mortise Lock
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    Sargent 8226 OP 26D Mortise Lock

    Sargent
    MSRP: $1,840.00
    $972.80
    The Sargent 8226 OP 26D is a heavy-duty mortise lock engineered for institutional and commercial buildings requiring maximum security and durability. Exceeding ANSI/BHMA Grade 2 standards and UL-listed for three-hour fire doors, it solves the need for...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,840.00
    $972.80
    Subtotal:
  • Sargent 8237 Mortise Lock 32D Stainless Steel Sargent 8237 Mortise Lock 32D Stainless Steel
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    Sargent 8237 Mortise Lock 32D Stainless Steel

    Sargent
    MSRP: $938.00
    $513.96
    The Sargent 8237 is a heavy-duty mortise lock engineered for maximum security and durability in commercial and institutional applications. It exceeds ANSI/BHMA Grade 1 standards and is UL-cUL listed for fire doors and windstorm resistance, making it...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $938.00
    $513.96
    Subtotal:
  • Sargent 8200 Series 60-8217 LNA Mortise Lock Sargent 8200 Series 60-8217 LNA Mortise Lock
    Quick view

    Sargent 8200 Series 60-8217 LNA Mortise Lock

    Sargent
    MSRP: $1,897.00
    $996.74
    The Sargent 8200 Series mortise lock is a heavy-duty door security solution for commercial and institutional facilities. Built to exceed ANSI/BHMA Grade 2 standards, it delivers superior strength and durability in high-traffic environments like offices,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,897.00
    $996.74
    Subtotal:
  • Sargent 8217 LNA Mortise Lock 26D RH Sargent 8217 LNA Mortise Lock 26D RH
    Quick view

    Sargent 8217 LNA Mortise Lock 26D RH

    Sargent
    MSRP: $1,873.00
    $986.66
    The Sargent 8217 LNA is a heavy-duty mortise lock engineered for maximum security and durability in commercial and institutional buildings. Exceeding ANSI/BHMA Grade 1 standards, it delivers superior strength for offices, hospitals, schools, and...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,873.00
    $986.66
    Subtotal:
  • 60-8227 LNA 26D LH Sargent Mortise Lock 60-8227 LNA 26D LH Sargent Mortise Lock
    Quick view

    60-8227 LNA 26D LH Sargent Mortise Lock

    Sargent
    MSRP: $1,792.00
    $952.64
    The Sargent 8200 LNA 26D LH is a heavy-duty mortise lock engineered for maximum security and durability in commercial and institutional settings. It exceeds ANSI/BHMA Grade 2 standards and suits offices, hospitals, schools, and behavioral health...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,792.00
    $952.64
    Subtotal:
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