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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  • Adams Rite 4300-30-1RP Steel Hawk Electrified Deadlatch (eLatch) Adams Rite 4300-30-1RP Steel Hawk Electrified Deadlatch (eLatch)
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    Adams Rite 4300-30-1RP Steel Hawk Electrified Deadlatch (eLatch)

    Adams Rite
    MSRP: $596.00
    $376.87
    4300-30-1RP Adams Rite Aluminum Door Deadlatches Steel Hawk Electrified Deadlatch, 1-1/8" Backset, Surface Strike, Dark Bronze and Aluminum Finish: Dark Bronze & Aluminum Series: 4300 Steel Hawk...
    Qty in Cart: 0
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    MSRP: $596.00
    $376.87
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  • Adams Rite Aluminum 4300-2M-201-628 Steel Hawk Electrified Deadlatch (eLatch) Adams Rite Aluminum 4300-2M-201-628 Steel Hawk Electrified Deadlatch (eLatch)
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    Adams Rite Aluminum 4300-2M-201-628 Steel Hawk Electrified Deadlatch (eLatch)

    Adams Rite
    MSRP: $664.00
    $419.37
    4300-2M-201-628 Adams Rite Aluminum Door Deadlatches Steel Hawk Electrified Deadlatch, 31/32" Backset, Monitored, Mortised Strike, Flat, Aluminum Finish: 628/US28 Series: 4300 Steel Hawk Electrified...
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    MSRP: $664.00
    $419.37
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  • Adams Rite 4513-36-IB Mortise Deadlatch, 1-1/8" Backset Adams Rite 4513-36-IB Mortise Deadlatch, 1-1/8" Backset
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    Adams Rite 4513-36-IB Mortise Deadlatch, 1-1/8" Backset

    Adams Rite
    MSRP: $81.00
    $54.64
    The Adams Rite 4513-36-IB is a standard-duty mortise deadlatch designed for facilities requiring flexible traffic control, such as hospitals, banks, and retail stores. The reverse-turn key feature...
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    MSRP: $81.00
    $54.64
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  • Adams Rite MS1861-01 Aluminum Door MS Bottom Rail Deadlock Adams Rite MS1861-01 Aluminum Door MS Bottom Rail Deadlock
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    Adams Rite MS1861-01 Aluminum Door MS Bottom Rail Deadlock

    Adams Rite
    MSRP: $194.00
    $130.55
    The Adams Rite MS1861-01 is a one-point vertical bolt deadlock designed for aluminum door frames. This bottom rail deadlock secures sliding or hinged aluminum doors with a single, reliable locking...
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    MSRP: $194.00
    $130.55
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  • Adams Rite 4510-35-101-628 Mortise Lock Adams Rite 4510-35-101-628 Mortise Lock
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    Adams Rite 4510-35-101-628 Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-35-101-628 is a standard duty mortise deadlatch designed for facilities requiring flexible traffic control, such as hospitals, banks, and retail stores. A reverse key turn holds...
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    MSRP: $119.00
    $79.70
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  • Marks USA 5 Series Mortise Lock Body Front 1-1/4" x 8" Backset 2-3/4"
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    Marks USA 5 Series Mortise Lock Body Front 1-1/4" x 8" Backset 2-3/4"

    Marks USA
    $190.68
    The Marks USA 5 Series mortise lock body is a replacement chassis for doors already prepared for this series. It fits the 1-1/4 by 8 inch front with 2-3/4 inch backset, dropping into the existing...
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    $190.68
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  • Marks 116A Entrance Metro Apartment Mortise Lockset Lever Handle Brass Front Marks 116A Entrance Metro Apartment Mortise Lockset Lever Handle Brass Back
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    Marks 116A Entrance Metro Apartment Mortise Lockset W/ Lever Handle

    Marks USA
    MSRP: $225.00
    $156.21
    The Marks 116A Metro is a workhorse apartment entrance lockset: a mortise lock with lever handle built for the daily traffic of multi-family buildings. Entrance function means the latch locks from...
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    MSRP: $225.00
    $156.21
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  • Adams Rite 4300-20-201-628 31/32" Steel Hawk Electrified Deadlatch (eLatch) Adams Rite 4300-20-201-628 31/32" Steel Hawk Electrified Deadlatch (eLatch)
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    Adams Rite 4300-20-201-628 31/32" Steel Hawk Electrified Deadlatch (eLatch)

    Adams Rite
    MSRP: $584.00
    $368.37
    Adams Rite 4300-20-201-628 31/32" 12VDC/AC 16VDC/AC 24VDC/AC Backset Steel Hawk Electrified Deadlatch (eLatch) *4901-01 Mortised Strike (Flat/Standard Jamb) <
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    MSRP: $584.00
    $368.37
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  • Adams Rite Dual Force 2190-401-000 Interconnected Deadbolt/Deadlatch Less Trim Adams Rite Dual Force 2190-401-000 Interconnected Deadbolt/Deadlatch Less Trim
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    Adams Rite Dual Force 2190-401-000 Interconnected Deadbolt/Deadlatch Less Trim

    Adams Rite
    MSRP: $372.00
    $233.06
    The Adams Rite Dual Force 2190-401-000 is an interconnected deadbolt/deadlatch body designed for professional installers and locksmiths who need a robust, less-trim solution. This lockset coordinates...
    Qty in Cart: 0
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    MSRP: $372.00
    $233.06
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  • Adams Rite Dual Force 2190-311-000 Interconnected Deadbolt/Deadlatch Less Trim Adams Rite Dual Force 2190-311-000 Interconnected Deadbolt/Deadlatch Less Trim
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    Adams Rite Dual Force 2190-311-000 Interconnected Deadbolt/Deadlatch Less Trim

    Adams Rite
    MSRP: $408.00
    $256.44
    The Adams Rite Dual Force 2190-311-000 is an interconnected deadbolt/deadlatch body designed for high-security applications requiring coordinated locking. This less-trim version suits facilities...
    Qty in Cart: 0
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    MSRP: $408.00
    $256.44
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  • Marks Lock 9NY92 New Yorker Lever Plate Design For Apartment Entrance and Vestibule Door Marks Lock 9NY92 New Yorker Lever Plate Design For Apartment Entrance and Vestibule Door Dimension
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    Marks Lock 9NY92 New Yorker Lever Plate Design For Apartment Entrance and Vestibule Door

    Marks USA
    MSRP: $410.00
    $286.05
    The Marks USA 9NY92 New Yorker is a mortise lock designed for apartment entrances and vestibule doors. This lever plate assembly suits high-traffic applications where durability matters. The...
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    MSRP: $410.00
    $286.05
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  • Marks 22 Series 22DW Storeroom Single Cylinder Mortise Lock for Security Door and Storm Door Marks 22 Series 22DW/3 Storeroom Single Cylinder Mortise Lock for Security Door and Storm Door
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    Marks USA 22DW Storeroom Mortise Lock, Bright Brass

    Marks USA
    $160.81 - $175.81
    The Marks USA 22DW is a storeroom mortise lock designed for security doors, storm doors, and screen doors. This single-cylinder lock keeps the outside knob secured at all times, requiring a key to...
    Qty in Cart: 0
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    $160.81 - $175.81
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