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 8241 LNA 26D RH Mortise Lock Sargent 8241 LNA 26D RH Mortise Lock
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    Sargent 8241 LNA 26D RH Mortise Lock

    Sargent
    MSRP: $1,910.00
    $1,082.20
    The Sargent 8241 LNA mortise lock is a heavy-duty Grade 2 certified lock built for high-security commercial applications. Designed for architects, facility managers, and security professionals, it exceeds ANSI/BHMA A156.13 standards and delivers superior...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,910.00
    $1,082.20
    Subtotal:
  • Sargent 8241 LNJ 26D Mortise Lock, Grade 2 Sargent 8241 LNJ 26D Mortise Lock, Grade 2
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    Sargent 8241 LNJ 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,654.00
    $980.72
    The Sargent 8241 LNJ 26D is a Grade 2 mortise lock designed for commercial doors requiring maximum security and durability. Built to exceed ANSI/BHMA A156.13 standards, it suits offices, schools, hospitals, and behavioral health facilities where strength...
    Qty in Cart: 0
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    Price:
    MSRP: $1,654.00
    $980.72
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  • LC-8239 LNB 26D Sargent Manufacturing Mortise Lock LC-8239 LNB 26D Sargent Manufacturing Mortise Lock
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    LC-8239 LNB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8239 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:
  • LC-8267 LNB 26D Sargent Manufacturing Mortise Lock LC-8267 LNB 26D Sargent Manufacturing Mortise Lock
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    LC-8267 LNB 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,563.00
    $836.46
    LC-8267 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: $1,563.00
    $836.46
    Subtotal:
  • 70-8241 LL 26D Sargent Mortise Lock 70-8241 LL 26D Sargent Mortise Lock
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    70-8241 LL 26D Sargent Mortise Lock

    Sargent
    MSRP: $1,840.00
    $972.80
    The Sargent 8200 Series 70-8241 LL mortise lock is a heavy-duty entrance lock exceeding ANSI/BHMA Grade 1 standards. Built for high-traffic commercial spaces, hospitals, schools, and offices, it delivers maximum security and durability with thru-bolted...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,840.00
    $972.80
    Subtotal:
  • LC-8251 LNP 26D Sargent Manufacturing Mortise Lock LC-8251 LNP 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8251 LNP 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,587.00
    $846.54
    LC-8251 LNP 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-8226 OP 26D Sargent Manufacturing Mortise Lock LC-8226 OP 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8226 OP 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,548.00
    $830.16
    LC-8226 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
    Quantity:
    Price:
    MSRP: $1,548.00
    $830.16
    Subtotal:
  • Sargent 8241 LNB 26D Mortise Lock, Grade 2 Sargent 8241 LNB 26D Mortise Lock, Grade 2
    Quick view

    Sargent 8241 LNB 26D Mortise Lock, Grade 2

    Sargent
    MSRP: $1,840.00
    $972.80
    The Sargent 8241 LNB 26D is a heavy-duty mortise lock engineered for commercial and institutional doors where durability and security matter. ANSI/BHMA Grade 2 certified and UL-cUL listed for three-hour fire doors, it suits offices, hospitals, schools,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,840.00
    $972.80
    Subtotal:
  • Sargent 8200 Mortise Lock 26D Stainless Steel Sargent 8200 Mortise Lock 26D Stainless Steel
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    Sargent 8200 Mortise Lock 26D Stainless Steel

    Sargent
    MSRP: $1,699.00
    $913.58
    The Sargent 8200 is a Grade 2 mortise lock built for high-security commercial applications in offices, hospitals, schools, and behavioral health facilities. It exceeds ANSI/BHMA A156.13 standards with thru-bolted construction, reinforced cylinder design,...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,699.00
    $913.58
    Subtotal:
  • 70-8251 LE1P 26D Sargent Mortise Lock 70-8251 LE1P 26D Sargent Mortise Lock
    Quick view

    70-8251 LE1P 26D Sargent Mortise Lock

    Sargent
    MSRP: $1,867.00
    $984.14
    The Sargent 8200 mortise lock delivers industrial-grade security for high-traffic commercial doors. Exceeding ANSI/BHMA Grade 1 standards, this lock is built for offices, hospitals, schools, and behavioral health facilities where strength and reliability...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,867.00
    $984.14
    Subtotal:
  • LC-8239 LNE 26D Sargent Manufacturing Mortise Lock LC-8239 LNE 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8239 LNE 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,618.00
    $859.56
    LC-8239 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
    Quantity:
    Price:
    MSRP: $1,618.00
    $859.56
    Subtotal:
  • LC-8251 LNF 26D Sargent Manufacturing Mortise Lock LC-8251 LNF 26D Sargent Manufacturing Mortise Lock
    Quick view

    LC-8251 LNF 26D Sargent Manufacturing Mortise Lock

    Sargent
    MSRP: $1,646.00
    $871.32
    LC-8251 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: $1,646.00
    $871.32
    Subtotal:
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