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-8239 OA 26D RH Sargent Manufacturing Mortise Lock LC-8239 OA 26D RH Sargent Manufacturing Mortise Lock
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    LC-8239 OA 26D RH Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,618.00
    $859.56
    LC-8239 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
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    Price:
    MSRP: $1,618.00
    $859.56
    Subtotal:
  • Sargent 8200 LE1J 32D Mortise Lock Sargent 8200 LE1J 32D Mortise Lock
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    Sargent 8200 LE1J 32D Mortise Lock

    Sargent
    MSRP: $1,059.00
    $574.78
    The Sargent 8200 LE1J 32D is a Grade 2 mortise lock built for high-security commercial applications. It exceeds ANSI/BHMA A156.13 standards and is UL-listed for three-hour fire doors and windstorm applications. Ideal for offices, hospitals, schools, and...
    Qty in Cart: 0
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    MSRP: $1,059.00
    $574.78
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  • Sargent 8237 Mortise Lock, 26D Satin Chrome Sargent 8237 Mortise Lock, 26D Satin Chrome
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    Sargent 8237 Mortise Lock, 26D Satin Chrome

    Sargent
    MSRP: $891.00
    $494.22
    The Sargent 8237 is a Grade 2 mortise lock engineered for high-security commercial and institutional applications. It exceeds ANSI/BHMA A156.13 standards and carries UL-cUL listing for three-hour fire doors and windstorm resistance. Choose this lock for...
    Qty in Cart: 0
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    MSRP: $891.00
    $494.22
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  • 8266 LNB 26D Sargent Manufacturing Mortise Lock 8266 LNB 26D Sargent Manufacturing Mortise Lock
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    8266 LNB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,615.00
    $858.30
    8266 LNB 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: $1,615.00
    $858.30
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  • Sargent 8215 LE1E 10B Mortise Lock Sargent 8215 LE1E 10B Mortise Lock
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    Sargent 8215 LE1E 10B Mortise Lock

    Sargent
    MSRP: $1,002.00
    $550.84
    The Sargent 8215 is a heavy-duty mortise lock engineered for commercial and institutional facilities requiring maximum security and durability. Exceeding ANSI/BHMA A156.13 Grade 1 standards, it delivers superior strength against forced entry and...
    Qty in Cart: 0
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    MSRP: $1,002.00
    $550.84
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  • LC-8226 LNJ 26D Sargent Manufacturing Mortise Lock LC-8226 LNJ 26D Sargent Manufacturing Mortise Lock
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    LC-8226 LNJ 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,362.00
    $837.32
    LC-8226 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
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    Price:
    MSRP: $1,362.00
    $837.32
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  • Sargent 8243 LW1F 26D Mortise Lock Sargent 8243 LW1F 26D Mortise Lock
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    Sargent 8243 LW1F 26D Mortise Lock

    Sargent
    MSRP: $914.00
    $503.88
    The Sargent 8243 is a heavy-duty mortise lock engineered for facilities demanding maximum security and reliability. ANSI/BHMA Grade 2 certified and exceeding Grade 1 standards, it suits offices, hospitals, schools, and behavioral health environments...
    Qty in Cart: 0
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    MSRP: $914.00
    $503.88
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  • Sargent 8237 LSL Mortise Lock, 26D Finish Sargent 8237 LSL Mortise Lock, 26D Finish
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    Sargent 8237 LSL Mortise Lock, 26D Finish

    Sargent
    MSRP: $1,745.00
    $932.90
    The Sargent 8237 LSL is a heavy-duty mortise lock engineered for high-security commercial and institutional applications. Exceeding ANSI/BHMA Grade 1 standards, it delivers superior strength and durability for offices, hospitals, schools, and behavioral...
    Qty in Cart: 0
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    MSRP: $1,745.00
    $932.90
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  • LC-8238 LNL 26D Sargent Manufacturing Mortise Lock LC-8238 LNL 26D Sargent Manufacturing Mortise Lock
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    LC-8238 LNL 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,530.00
    $822.60
    LC-8238 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: $1,530.00
    $822.60
    Subtotal:
  • LC-8238 LNF 32D Sargent Manufacturing Mortise Lock LC-8238 LNF 32D Sargent Manufacturing Mortise Lock
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    LC-8238 LNF 32D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,605.00
    $854.10
    LC-8238 LNF 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
    Quantity:
    Price:
    MSRP: $1,605.00
    $854.10
    Subtotal:
  • Sargent 8237 LL Mortise Lock, 32D Satin Stainless Sargent 8237 LL Mortise Lock, 32D Satin Stainless
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    Sargent 8237 LL Mortise Lock, 32D Satin Stainless

    Sargent
    MSRP: $885.00
    $491.70
    The Sargent 8237 LL is a heavy-duty mortise lock engineered for commercial and institutional buildings requiring maximum security and durability. This Grade 2 certified lock exceeds ANSI/BHMA A156.13 standards and is UL-listed for three-hour fire doors,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $885.00
    $491.70
    Subtotal:
  • LC-8238 LNA 32D RH Sargent Manufacturing Mortise Lock LC-8238 LNA 32D RH Sargent Manufacturing Mortise Lock
    Quick view

    LC-8238 LNA 32D RH Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,605.00
    $854.10
    LC-8238 LNA 32D 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: $1,605.00
    $854.10
    Subtotal:
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