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 8243 LE1F Mortise Lock, 32D Satin Stainless Sargent 8243 LE1F Mortise Lock, 32D Satin Stainless
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    Sargent 8243 LE1F Mortise Lock, 32D Satin Stainless

    Sargent
    MSRP: $1,059.00
    $574.78
    The Sargent 8243 LE1F is a heavy-duty mortise lock engineered for high-security commercial and institutional applications. It exceeds ANSI/BHMA Grade 1 standards and is UL-listed for three-hour fire doors, making it ideal for offices, hospitals, schools,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,059.00
    $574.78
    Subtotal:
  • LC-8255 LNW 32D Sargent Manufacturing Mortise Lock LC-8255 LNW 32D Sargent Manufacturing Mortise Lock
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    LC-8255 LNW 32D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,577.00
    $842.34
    LC-8255 LNW 32D 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
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    Price:
    MSRP: $1,577.00
    $842.34
    Subtotal:
  • LC-8227 OA 26D RH Sargent Manufacturing Mortise Lock LC-8227 OA 26D RH Sargent Manufacturing Mortise Lock
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    LC-8227 OA 26D RH Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,646.00
    $871.32
    LC-8227 OA 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,646.00
    $871.32
    Subtotal:
  • Sargent 8225 LNF 26D Mortise Lock Sargent 8225 LNF 26D Mortise Lock
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    Sargent 8225 LNF 26D Mortise Lock

    Sargent
    MSRP: $936.00
    $513.12
    The Sargent 8225 LNF 26D is a Grade 2 mortise lock engineered for high-security commercial applications. Built to exceed ANSI/BHMA A156.13 standards, it delivers superior strength and durability for offices, schools, hospitals, and institutional...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $936.00
    $513.12
    Subtotal:
  • TR-8225 LE1J 26D Sargent Mortise Lock TR-8225 LE1J 26D Sargent Mortise Lock
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    TR-8225 LE1J 26D Sargent Mortise Lock

    Sargent
    MSRP: $1,002.00
    $550.84
    The Sargent 8200 TR-8225 LE1J mortise lock is a heavy-duty passage lock built for high-security commercial applications. Exceeding ANSI/BHMA Grade 1 standards, it delivers superior strength and durability in offices, hospitals, schools, and behavioral...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,002.00
    $550.84
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  • LC-8227 LNW 26D Sargent Manufacturing Mortise Lock LC-8227 LNW 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8227 LNW 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,646.00
    $871.32
    LC-8227 LNW 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: $1,646.00
    $871.32
    Subtotal:
  • Sargent 8200 LE2L 32D Mortise Lock Sargent 8200 LE2L 32D Mortise Lock
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    Sargent 8200 LE2L 32D Mortise Lock

    Sargent
    MSRP: $1,014.00
    $574.23
    The Sargent 8200 LE2L 32D is a heavy-duty mortise lock engineered for commercial doors requiring maximum security and durability. Exceeding ANSI/BHMA Grade 1 standards, it protects offices, hospitals, schools, and behavioral health facilities from...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,014.00
    $574.23
    Subtotal:
  • LC-8217 LNF 26D Sargent Manufacturing Mortise Lock LC-8217 LNF 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8217 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,581.00
    $844.02
    LC-8217 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,581.00
    $844.02
    Subtotal:
  • Sargent 8225 LNE 26D Mortise Lock, Grade 2 Sargent 8225 LNE 26D Mortise Lock, Grade 2
    Quick view

    Sargent 8225 LNE 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $936.00
    $513.12
    The Sargent 8225 LNE mortise lock delivers Grade 2 certified security and durability for commercial doors in offices, hospitals, schools, and institutional buildings. This heavy-duty mortise lock exceeds ANSI/BHMA A156.13 standards and is UL-listed for...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $936.00
    $513.12
    Subtotal:
  • Sargent 8237 Mortise Lock, RH 26D, Oil-Rubbed Bronze Sargent 8237 Mortise Lock, RH 26D, Oil-Rubbed Bronze
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    Sargent 8237 Mortise Lock, RH 26D, Oil-Rubbed Bronze

    Sargent
    MSRP: $891.00
    $494.22
    The Sargent 8237 is a heavy-duty mortise lock engineered for institutional and commercial doors requiring maximum security and durability. It exceeds ANSI/BHMA Grade 2 standards and is UL-listed for three-hour fire doors, making it ideal for hospitals,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $891.00
    $494.22
    Subtotal:
  • LC-8229 LNJ 26D Sargent Manufacturing Mortise Lock LC-8229 LNJ 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8229 LNJ 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,362.00
    $837.32
    LC-8229 LNJ 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: $1,362.00
    $837.32
    Subtotal:
  • LC-8229 LNB 26D Sargent Manufacturing Mortise Lock LC-8229 LNB 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8229 LNB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8229 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:
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