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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  • 8296 LNP 26D Sargent Manufacturing Mortise Lock 8296 LNP 26D Sargent Manufacturing Mortise Lock
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    8296 LNP 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,236.00
    $669.12
    8296 LNP 26D Sargent Manufacturing Mortise LockFeatures: ANSI/BHMA Grade 2 certified for cycle and strength requirements UL-cUL listed for three-hour fire doors and windstorm applications Thru-bolted lever trim and strengthened cylinder retainer...
    Qty in Cart: 0
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    MSRP: $1,236.00
    $669.12
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  • 8295 LE1B 26D Sargent Manufacturing Mortise Lock 8295 LE1B 26D Sargent Manufacturing Mortise Lock
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    8295 LE1B 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $749.00
    $434.58
    8295 LE1B 26D Sargent Manufacturing Mortise LockFeatures: ANSI/BHMA Grade 2 certified for cycle and strength requirements UL-cUL listed for three-hour fire doors and windstorm applications Thru-bolted lever trim and strengthened cylinder retainer...
    Qty in Cart: 0
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    MSRP: $749.00
    $434.58
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  • Sargent 8237 LNA Mortise Lock, RH, 10B Sargent 8237 LNA Mortise Lock, RH, 10B
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    Sargent 8237 LNA Mortise Lock, RH, 10B

    Sargent
    MSRP: $938.00
    $513.96
    The Sargent 8237 LNA is a heavy-duty mortise lock built for high-traffic commercial and institutional buildings. Exceeding ANSI/BHMA Grade 1 standards, it delivers superior strength and durability for offices, hospitals, schools, and behavioral health...
    Qty in Cart: 0
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    Price:
    MSRP: $938.00
    $513.96
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  • Sargent 8205 LL Mortise Lock 26D Stainless Sargent 8205 LL Mortise Lock 26D Stainless
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    Sargent 8205 LL Mortise Lock 26D Stainless

    Sargent
    MSRP: $828.00
    $467.76
    The Sargent 8205 LL is a heavy-duty mortise lock engineered for high-security commercial and institutional applications. ANSI/BHMA Grade 2 certified and UL-cUL listed for three-hour fire doors, it exceeds industry standards for strength and durability...
    Qty in Cart: 0
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    MSRP: $828.00
    $467.76
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  • LC-8238 LNE 26D Sargent Manufacturing Mortise Lock LC-8238 LNE 26D Sargent Manufacturing Mortise Lock
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    LC-8238 LNE 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,581.00
    $844.02
    LC-8238 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...
    Qty in Cart: 0
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    MSRP: $1,581.00
    $844.02
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  • Sargent 8200 LE1J 26D Mortise Lock Sargent 8200 LE1J 26D Mortise Lock
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    Sargent 8200 LE1J 26D Mortise Lock

    Sargent
    MSRP: $1,002.00
    $550.84
    The Sargent 8200 LE1J 26D is a Grade 1 mortise lock engineered for high-security commercial applications. Built to exceed ANSI/BHMA A156.13 standards, it delivers superior strength and durability for offices, hospitals, schools, and behavioral health...
    Qty in Cart: 0
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    MSRP: $1,002.00
    $550.84
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  • Sargent 8225 LJ 26D Mortise Lock, Grade 2 Sargent 8225 LJ 26D Mortise Lock, Grade 2
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    Sargent 8225 LJ 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $628.00
    $369.26
    The Sargent 8225 LJ 26D is a heavy-duty mortise lock engineered for commercial and institutional buildings. Certified ANSI/BHMA Grade 2 and UL-cUL listed for three-hour fire doors, it provides superior strength, security and durability for offices,...
    Qty in Cart: 0
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    MSRP: $628.00
    $369.26
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  • LC-8204 OP 26D Sargent Manufacturing Mortise Lock LC-8204 OP 26D Sargent Manufacturing Mortise Lock
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    LC-8204 OP 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,508.00
    $813.36
    LC-8204 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...
    Qty in Cart: 0
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    MSRP: $1,508.00
    $813.36
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  • Sargent 8225 LE1F 32D Mortise Lock, Grade 2 Sargent 8225 LE1F 32D Mortise Lock, Grade 2
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    Sargent 8225 LE1F 32D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,059.00
    $574.78
    The Sargent 8225 LE1F 32D is a heavy-duty mortise lock engineered for high-traffic commercial and institutional doors. Built to ANSI/BHMA Grade 2 standards and UL-listed for three-hour fire doors, it delivers superior strength, security, and durability...
    Qty in Cart: 0
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    MSRP: $1,059.00
    $574.78
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  • LC-8240 EL 26D Sargent Manufacturing Mortise Lock LC-8240 EL 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8240 EL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8240 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...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,548.00
    $830.16
    Subtotal:
  • Sargent 8237 LNA Mortise Lock, Left Hand, Grade 2 Sargent 8237 LNA Mortise Lock, Left Hand, Grade 2
    Quick view

    Sargent 8237 LNA Mortise Lock, Left Hand, Grade 2

    Sargent
    MSRP: $938.00
    $513.96
    The Sargent 8237 LNA is a heavy-duty mortise lock engineered for commercial and institutional doors requiring maximum security and durability. ANSI/BHMA Grade 2 certified and UL-listed for three-hour fire doors, it exceeds industry standards and resists...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $938.00
    $513.96
    Subtotal:
  • LC-8226 LNF 26D Sargent Manufacturing Mortise Lock LC-8226 LNF 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8226 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,618.00
    $859.56
    LC-8226 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: $1,618.00
    $859.56
    Subtotal:
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