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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  • Corbin Russwin ML2067 NSM 630 D214 Apartment or Dormitory Mortise Lock NS Lever Corbin Russwin ML2067 NSM 630 D214 Apartment or Dormitory Mortise Lock NS Lever
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    Corbin Russwin ML2067 NSM 630 D214 Apartment or Dormitory Mortise Lock NS Lever

    Corbin Russwin
    MSRP: $1,786.00
    $950.12
    The Corbin Russwin ML2067 is a Grade 1 mortise lock engineered for apartment and dormitory applications where reliable access control is essential. This heavy-gauge steel lock features a...
    Qty in Cart: 0
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    MSRP: $1,786.00
    $950.12
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  • Corbin Russwin ML2055 LWA 626 LC Classroom Mortise Lock LW Lever Corbin Russwin ML2055 LWA 626 LC Classroom Mortise Lock LW Lever
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    Corbin Russwin ML2055 LWA 626 LC Classroom Mortise Lock LW Lever

    Corbin Russwin
    MSRP: $1,214.00
    $659.88
    ML2055 LWA 626 LC Corbin Russwin Mortise Lock Classroom Mortise Lock, LW Lever, A Rose, Satin Chrome Finish: 626/US26D Series: ML2000 Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks...
    Qty in Cart: 0
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    MSRP: $1,214.00
    $659.88
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  • Corbin Russwin ML2051 LWA 626 LC Entrance or Office Mortise Lock LW Lever Corbin Russwin ML2051 LWA 626 LC Entrance or Office Mortise Lock LW Lever
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    Corbin Russwin ML2051 LWA 626 LC Entrance or Office Mortise Lock LW Lever

    Corbin Russwin
    MSRP: $1,214.00
    $659.88
    ML2051 LWA 626 LC Corbin Russwin Mortise Lock Entrance or Office Mortise Lock, LW Lever, A Rose, Satin Chrome Finish: 626/US26D Series: ML2000 Series Mortise Locks Type: Locks, Cylinders, Cores,...
    Qty in Cart: 0
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    MSRP: $1,214.00
    $659.88
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  • Corbin Russwin ML2051 LWA 626 Mortise Lock, Satin Chrome Corbin Russwin ML2051 LWA 626 Mortise Lock, Satin Chrome
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    Corbin Russwin ML2051 LWA 626 Mortise Lock, Satin Chrome

    Corbin Russwin
    MSRP: $1,360.00
    $721.20
    The Corbin Russwin ML2051 LWA 626 is a Grade 1 mortise lock engineered for high-traffic commercial and institutional entrances and offices. Built from heavy-gauge steel with a 1 inch stainless steel...
    Qty in Cart: 0
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    MSRP: $1,360.00
    $721.20
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  • Corbin Russwin ML2067 LL Mortise Lockbody, Satin Chrome Corbin Russwin ML2067 LL Mortise Lockbody, Satin Chrome
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    Corbin Russwin ML2067 LL Mortise Lockbody, Satin Chrome

    Corbin Russwin
    MSRP: $768.00
    $442.56
    The Corbin Russwin ML2067 LL is a Grade 1 mortise lockbody designed for apartment and dormitory applications requiring reliable, durable security. Built from heavy-gauge steel with a 1" stainless...
    Qty in Cart: 0
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    MSRP: $768.00
    $442.56
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  • Corbin Russwin ML2020 LWA 626 Privacy Bedroom or Bathroom Mortise Lock LW Lever Corbin Russwin ML2020 LWA 626 Privacy Bedroom or Bathroom Mortise Lock LW Lever
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    Corbin Russwin ML2020 LWA 626 Privacy Bedroom or Bathroom Mortise Lock LW Lever

    Corbin Russwin
    MSRP: $1,287.00
    $690.54
    ML2020 LWA 626 Corbin Russwin Mortise Lock Privacy, Bedroom or Bathroom Mortise Lock, LW Lever, A Rose, Satin Chrome Finish: 626/US26D Series: ML2000 Series Mortise Locks Type: Locks, Cylinders,...
    Qty in Cart: 0
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    MSRP: $1,287.00
    $690.54
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  • Marks K22 Knob Replacement Kit For Marks 22AC/26D Mortise Lock Marks K22 Knob Replacement Kit For Marks 22AC/26D Mortise Lock
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    Marks K22 Knob Replacement Kit For 22AC/26D Mortise Lock

    Marks USA
    MSRP: $80.00
    $60.84
    The Marks K22 is a knob and rose replacement kit designed for doors using Marks 22AC/26D mortise locksets. It solves the problem of broken or damaged knobs on ornamental iron mortise locks, restoring...
    Qty in Cart: 0
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    MSRP: $80.00
    $60.84
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  • Marks USA 5RW92FD/32D 5 Series Apartment Mortise Lockset Front 1-1/4" x 8" Backset 2-3/4" Marks USA 5FD/32D-B4S6 5 Series Apartment Mortise Lock Body Front 1-1/4" x 8" Backset 2-3/4"
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    Marks USA 5RW92FD/32D 5 Series Apartment Mortise Lockset

    Marks USA
    MSRP: $631.00
    $287.21
    The Marks USA 5 Series is a Grade 1 mortise lockset designed for apartment buildings and multi-tenant properties. Its AUTO-REVERSE feature allows field handing reversal without disassembly, saving...
    Qty in Cart: 0
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    MSRP: $631.00
    $287.21
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  • Marks USA 5CL92FD/32D 5 Series Apartment Mortise Lockset Front 1-1/4" x 8" Backset 2-3/4" Marks USA 5FD/32D-B4S6 5 Series Apartment Mortise Lock Body Front 1-1/4" x 8" Backset 2-3/4"
    Quick view

    Marks USA 5CL92FD 5 Series Apartment Mortise Lockset, Satin Stainless, 2-3/4" Backset

    Marks USA
    MSRP: $831.00
    $367.64
    The Marks USA 5 Series mortise lockset delivers commercial-grade security for apartment buildings and multi-tenant properties. This Grade 1 BHMA/ANSI certified lockset features an innovative...
    Qty in Cart: 0
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    MSRP: $831.00
    $367.64
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  • Marks USA 5FD/32D-B4S6 5 Series Apartment Mortise Lock Body Front 1-1/4" x 8" Backset 2-3/4"
    Quick view

    Marks USA 5FD/32D-B4S6 5 Series Apartment Mortise Lock

    Marks USA
    MSRP: $379.00
    $190.68
    The Marks USA 5 Series apartment mortise lock body is a Grade 1 certified lockset designed for multi-tenant residential and commercial buildings. Its auto-reverse technology allows you to change...
    Qty in Cart: 0
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    MSRP: $379.00
    $190.68
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  • Arrow BM38-LB Lock Body Arrow BM38-LB Lock Body
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    Arrow BM38-LB Lock Body

    Arrow
    MSRP: $476.19
    $399.99
    The Arrow BM38-LB is a mortise lock body designed for commercial and residential applications requiring a reliable, upgradeable locking mechanism. It solves the problem of needing a quality lock body...
    Qty in Cart: 0
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    MSRP: $476.19
    $399.99
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  • Arrow BM27-LB Lock Body Arrow BM27-LB Lock Body
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    Arrow BM27-LB Lock Body

    Arrow
    MSRP: $417.21
    $350.46
    The Arrow BM27-LB is a mortise lock body designed for commercial and residential applications requiring a reliable, replaceable locking mechanism. This lock body solves the need for secure,...
    Qty in Cart: 0
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    MSRP: $417.21
    $350.46
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