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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  • Arrow BM21 NL 26D Front Door Mortise Lock N Lever L Rose Arrow BM21 NL 26D Front Door Mortise Lock N Lever L Rose
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    Arrow BM21 NL 26D Front Door Mortise Lock N Lever L Rose

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    MSRP: $866.58
    $492.63
    BM21 NL 26D Arrow Mortise Lock Front Door Mortise Lock, N Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise...
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    MSRP: $866.58
    $492.63
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  • Arrow BM27 JL 26D Institutional Mortise Lock J Lever L Rose Arrow BM27 JL 26D Institutional Mortise Lock J Lever L Rose
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    Arrow BM27 JL 26D Institutional Mortise Lock J Lever L Rose

    Arrow
    MSRP: $940.59
    $534.45
    BM27 JL 26D Arrow Mortise Lock Institutional Mortise Lock, J Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise...
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    MSRP: $940.59
    $534.45
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  • Arrow BM26 VL 26D Privacy Mortise Lock V Lever L Rose Arrow BM26 VL 26D Privacy Mortise Lock V Lever L Rose
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    Arrow BM26 VL 26D Privacy Mortise Lock V Lever L Rose

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    MSRP: $858.00
    $488.94
    BM26 VL 26D Arrow Mortise Lock Privacy Mortise Lock, V Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise Lock ...
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    MSRP: $858.00
    $488.94
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  • Arrow BM24 BRL 32D Storeroom Mortise Lock BR Lever L Rose Arrow BM24 BRL 32D Storeroom Mortise Lock BR Lever L Rose
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    Arrow BM24 BRL 32D Storeroom Mortise Lock BR Lever L Rose

    Arrow
    MSRP: $897.69
    $506.01
    BM24 BRL 32D Arrow Mortise Lock Storeroom Mortise Lock, BR Lever, L Rose, Satin Stainless Steel Finish: 630/US32D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
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    MSRP: $897.69
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  • Arrow BM24 BRL 26D Storeroom Mortise Lock BR Lever L Rose Arrow BM24 BRL 26D Storeroom Mortise Lock BR Lever L Rose
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    Arrow BM24 BRL 26D Storeroom Mortise Lock BR Lever L Rose

    Arrow
    MSRP: $839.77
    $481.10
    BM24 BRL 26D Arrow Mortise Lock Storeroom Mortise Lock, BR Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise...
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    MSRP: $839.77
    $481.10
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  • Arrow BM08 BRL 26D Single Dummy Mortise Trim BR Lever L Rose Arrow BM08 BRL 26D Single Dummy Mortise Trim BR Lever L Rose
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    Arrow BM08 BRL 26D Single Dummy Mortise Trim BR Lever L Rose

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    MSRP: $278.85
    $167.87
    BM08 BRL 26D Arrow Mortise Lock Single Dummy Mortise Trim, BR Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise...
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    MSRP: $278.85
    $167.87
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  • Arrow BM09 XH 26D Double Dummy Mortise Trim X Lever H Escutcheon Arrow BM09 XH 26D Double Dummy Mortise Trim X Lever H Escutcheon
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    Arrow BM09 XH 26D Double Dummy Mortise Trim X Lever H Escutcheon

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    MSRP: $672.46
    $404.82
    BM09 XH 26D Arrow Mortise Lock Double Dummy Mortise Trim, X Lever, H Escutcheon, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
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    MSRP: $672.46
    $404.82
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  • Arrow BM09 JL 26D Double Dummy Mortise Trim J Lever L Rose Arrow BM09 JL 26D Double Dummy Mortise Trim J Lever L Rose
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    Arrow BM09 JL 26D Double Dummy Mortise Trim J Lever L Rose

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    MSRP: $625.27
    $376.42
    BM09 JL 26D Arrow Mortise Lock Double Dummy Mortise Trim, J Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type: Mortise...
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    MSRP: $625.27
    $376.42
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  • Arrow BM37 XL 32D Double Classroom Mortise Lock X Lever L Rose Arrow BM37 XL 32D Double Classroom Mortise Lock X Lever L Rose
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    Arrow BM37 XL 32D Double Classroom Mortise Lock X Lever L Rose

    Arrow
    MSRP: $1,062.85
    $587.03
    BM37 XL 32D Arrow Mortise Lock Double Classroom Mortise Lock, X Lever, L Rose, Satin Stainless Steel Finish: 630/US32D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub...
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    MSRP: $1,062.85
    $587.03
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  • Arrow BM37 BRL 26D Double Classroom Mortise Lock BR Lever L Rose Arrow BM37 BRL 26D Double Classroom Mortise Lock BR Lever L Rose
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    Arrow BM37 BRL 26D Double Classroom Mortise Lock BR Lever L Rose

    Arrow
    MSRP: $904.12
    $508.77
    BM37 BRL 26D Arrow Mortise Lock Double Classroom Mortise Lock, BR Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
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    MSRP: $904.12
    $508.77
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  • Arrow BM20 BRL 26D Entrance Dormitory Mortise Lock BR Lever L Rose Arrow BM20 BRL 26D Entrance Dormitory Mortise Lock BR Lever L Rose
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    Arrow BM20 BRL 26D Entrance Dormitory Mortise Lock BR Lever L Rose

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    MSRP: $866.58
    $492.63
    BM20 BRL 26D Arrow Mortise Lock Entrance, Dormitory Mortise Lock, BR Lever, L Rose, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
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    MSRP: $866.58
    $492.63
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  • Arrow BM17 HSG 26D Classroom Mortise Lock HS Lever G Escutcheon Arrow BM17 HSG 26D Classroom Mortise Lock HS Lever G Escutcheon
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    Arrow BM17 HSG 26D Classroom Mortise Lock HS Lever G Escutcheon

    Arrow
    MSRP: $886.96
    $501.39
    BM17 HSG 26D Arrow Mortise Lock Classroom Mortise Lock, HS Lever, G Escutcheon, Satin Chrome Finish: 626/US26D Series: BM Series Mortise Locks Type: Locks, Cylinders, Cores, Keyblanks Sub Type:...
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    MSRP: $886.96
    $501.39
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