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 8255 26D Mortise Lock Body Satin Chrome Sargent 8255 26D Mortise Lock Body Satin Chrome
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    Sargent 8255 26D Mortise Lock Body Satin Chrome

    Sargent
    MSRP: $677.00
    $398.08
    The Sargent BP-8255 26D is a mortise lock body designed for office and entry doors requiring professional-grade security. This lockbody-only unit in satin chrome finish suits architects, facility...
    Qty in Cart: 0
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    Price:
    MSRP: $677.00
    $398.08
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  • Sargent BP-8237 26D Classroom Mortise Lock Lockbody Only Satin Chrome Sargent BP-8237 26D Classroom Mortise Lock Lockbody Only Satin Chrome
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    Sargent BP-8237 26D Classroom Mortise Lock Lockbody Only Satin Chrome

    Sargent
    MSRP: $677.00
    $398.08
    BP-8237 26D Sargent Mortise Lock Classroom Mortise Lock, Lockbody Only, Satin Chrome Finish: 626/US26D Series: 8200 Line Lever Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
    Qty in Cart: 0
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    MSRP: $677.00
    $398.08
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  • Sargent BP-8225 26D Dormitory or Exit Mortise Lock Lockbody Only Sargent BP-8225 26D Dormitory or Exit Mortise Lock Lockbody Only
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    Sargent BP-8225 26D Dormitory or Exit Mortise Lock Lockbody Only

    Sargent
    MSRP: $716.00
    $420.72
    The Sargent BP-8225 26D is a mortise lockbody designed for dormitory and exit doors where keyless or restricted-key operation is required. This lockbody-only unit provides institutional-grade...
    Qty in Cart: 0
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    MSRP: $716.00
    $420.72
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  • Sargent RX-8271-24V 26D Fail Secure Electrified Mortise Lock Sargent RX-8271-24V 26D Fail Secure Electrified Mortise Lock
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    Sargent RX-8271-24V 26D Fail Secure Electrified Mortise Lock

    Sargent
    MSRP: $1,849.00
    $976.58
    The Sargent RX-8271-24V is a 24V electrified mortise lock built for access control on commercial doors. This fail-secure model holds the bolt locked when power is lost, ideal for high-security...
    Qty in Cart: 0
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    MSRP: $1,849.00
    $976.58
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  • Sargent 4877 26D Classroom Mortise Deadbolt Satin Chrome Sargent 4877 26D Classroom Mortise Deadbolt Satin Chrome
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    Sargent 4877 26D Classroom Mortise Deadbolt Satin Chrome

    Sargent
    MSRP: $590.00
    $347.51
    The Sargent 4877 26D is a mortise deadbolt designed for classroom and institutional doors where controlled access and security are priorities. Its heavy-duty wrought steel case with laminated stacked...
    Qty in Cart: 0
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    MSRP: $590.00
    $347.51
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  • MS1890-4015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/2" Backset Flat Strike LH or RHR MS1890-4015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/2" Backset Flat Strike LH or RHR
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    MS1890-4015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/2" Backset Flat Strike LH or RHR

    Adams Rite
    MSRP: $332.00
    $206.85
    MS1890-4015-628 Adams Rite Aluminum Door Deadlocks MS Deadlock/Deadlatch, Flat Faceplate, 1-1/2" Backset, Flat Strike, LH or RHR, Aluminum Finish: 628/US28 Series: MS Deadlock Type: Locks,...
    Qty in Cart: 0
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    MSRP: $332.00
    $206.85
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  • Adams Rite MS1890-3016-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike RH or LHR Adams Rite MS1890-3016-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike RH or LHR
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    Adams Rite MS1890-3016-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike RH or LHR

    Adams Rite
    MSRP: $332.00
    $206.85
    The Adams Rite MS1890-3016-628 is a heavy-duty aluminum deadlock designed for commercial and institutional aluminum door frames. This MS series deadlock features a deadlatch function, flat faceplate,...
    Qty in Cart: 0
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    Price:
    MSRP: $332.00
    $206.85
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  • Adams Rite MS1890-3015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike LH or RHR Adams Rite MS1890-3015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike LH or RHR
    Quick view

    Adams Rite MS1890-3015-628 MS Deadlock/Deadlatch Flat Faceplate 1-1/8" Backset Flat Strike LH or RHR

    Adams Rite
    MSRP: $332.00
    $206.85
    MS1890-3015-628 Adams Rite Aluminum Door Deadlocks MS Deadlock/Deadlatch, Flat Faceplate, 1-1/8" Backset, Flat Strike, LH or RHR, Aluminum Finish: 628/US28 Series: MS Deadlock Type: Locks,...
    Qty in Cart: 0
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    MSRP: $332.00
    $206.85
    Subtotal:
  • Adams Rite MS1880-03-682 Two-Point Flushbolt Hourglass Shaped Turn 39-1/16" to 43" Cylinder Height Adams Rite MS1880-03-682 Two-Point Flushbolt Hourglass Shaped Turn 39-1/16" to 43" Cylinder Height
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    Adams Rite MS1880-03-682 Two-Point Flushbolt Hourglass Shaped Turn 39-1/16" to 43" Cylinder Height

    Adams Rite
    MSRP: $214.00
    $144.98
    The Adams Rite MS1880-03-682 is a two-point flushbolt designed for paired doors, featuring an hourglass-shaped turn and satin chrome finish. It prevents accidental locking of the inactive leaf,...
    Qty in Cart: 0
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    MSRP: $214.00
    $144.98
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  • MS1853S-310-IB Adams Rite MS Deadlock Less Faceplate 1-1/8" Backset Straight Bolt MS1853S-310-IB Adams Rite MS Deadlock Less Faceplate 1-1/8" Backset Straight Bolt
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    MS1853S-310-IB Adams Rite MS Deadlock Less Faceplate 1-1/8" Backset Straight Bolt

    Adams Rite
    MSRP: $82.00
    $54.12
    The Adams Rite MS1853S-310-IB is an aluminum door deadlock designed for commercial and institutional applications requiring reliable bolt security. This mortise-style deadlock features a straight...
    Qty in Cart: 0
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    MSRP: $82.00
    $54.12
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  • Adams Rite MS1852S-316-628 MS Deadlock RH or LHR Beveled Faceplate 1-1/8" Backset Straight Bolt Adams Rite MS1852S-316-628 MS Deadlock RH or LHR Beveled Faceplate 1-1/8" Backset Straight Bolt
    Quick view

    Adams Rite MS1852S-316-628 MS Deadlock RH or LHR Beveled Faceplate 1-1/8" Backset Straight Bolt

    Adams Rite
    MSRP: $92.00
    $62.23
    MS1852S-316-628 Adams Rite Aluminum Door Deadlocks MS Deadlock, RH or LHR Beveled Faceplate, 1-1/8" Backset, Straight Bolt, Aluminum Finish: 628/US28 Series: MS Deadlock Type: Locks, Cylinders,...
    Qty in Cart: 0
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    MSRP: $92.00
    $62.23
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  • Adams Rite MS1850S-350-313 MS Deadlock Flat Faceplate 1-1/8" Backset Hookbolt Adams Rite MS1850S-350-313 MS Deadlock Flat Faceplate 1-1/8" Backset Hookbolt
    Quick view

    Adams Rite MS1850S-350-313 MS Deadlock Flat Faceplate 1-1/8" Backset Hookbolt

    Adams Rite
    MSRP: $92.00
    $62.23
    The Adams Rite MS1850S-350-313 is a heavy-duty aluminum door deadlock designed for commercial and industrial applications requiring reliable perimeter security. Its hookbolt mechanism and flat...
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $92.00
    $62.23
    Subtotal:
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