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 4511-36-101-628 1-1/8" Mortise Lock Adams Rite 4511-36-101-628 1-1/8" Mortise Lock
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    Adams Rite 4511-36-101-628 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4511-36-101-628 is a standard-duty mortise deadlatch designed for facilities requiring flexible traffic control, such as hospitals, banks, and retail stores. Its reverse-turn key...
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    MSRP: $119.00
    $79.70
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  • Adams Rite 4511-35-101-628 1-1/8" Mortise Lock Adams Rite 4511-35-101-628 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4511-35-101-628 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4511-35-101-628 is a standard-duty mortise deadlatch designed for flexible traffic control in hospitals, banks, retail stores, and institutional buildings. The reverse-turn key feature...
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    MSRP: $119.00
    $79.70
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  • Adams Rite 4511-35-101-313 1-1/8" Mortise Lock Adams Rite 4511-35-101-313 1-1/8" Mortise Lock
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    Adams Rite 4511-35-101-313 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4511-35-101-313 is a standard-duty mortise lock with deadlatch functionality, designed for commercial buildings requiring flexible traffic control. Hospitals, banks, and retail...
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    MSRP: $119.00
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  • Adams Rite 4510-45-201-628 1-1/2" Mortise Lock Adams Rite 4510-45-201-628 1-1/2" Mortise Lock
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    Adams Rite 4510-45-201-628 1-1/2" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-45-201-628 is a standard-duty mortise deadlatch designed for flexible traffic control in hospitals, banks, retail stores, and commercial buildings. The reverse-turn key mechanism...
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    Qty in Cart: 0
    Quantity:
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    MSRP: $119.00
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  • Adams Rite 4510-45-101-628 1-1/2" Mortise Lock Adams Rite 4510-45-101-628 1-1/2" Mortise Lock
    Quick view

    Adams Rite 4510-45-101-628 1-1/2" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-45-101-628 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...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
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  • Adams Rite 4510-45-101-313 1-1/2" Mortise Lock Adams Rite 4510-45-101-313 1-1/2" Mortise Lock
    Quick view

    Adams Rite 4510-45-101-313 1-1/2" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-45-101-313 is a standard-duty mortise deadlatch designed for flexible traffic control in hospitals, banks, retail stores, and commercial buildings. The reverse-turn key feature...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-36-201-628 1-1/8" Mortise Lock Adams Rite 4510-36-201-628 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-36-201-628 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-36-201-628 is a standard-duty mortise deadlatch designed for applications requiring flexible traffic control. Ideal for hospitals, banks, and retail environments, this lock allows...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-36-201-313 1-1/8" Mortise Lock Adams Rite 4510-36-201-313 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-36-201-313 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-36-201-313 is a standard duty mortise deadlatch designed for facilities requiring flexible traffic control, such as hospitals, banks, and retail stores. The reverse-turn key...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-36-101-628 1-1/8" Mortise Lock Adams Rite 4510-36-101-628 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-36-101-628 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-36-101-628 is a standard duty mortise deadlatch designed for commercial buildings requiring flexible traffic control. Ideal for hospitals, banks, and retail environments, this...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-36-101-313 1-1/8" Mortise Lock Adams Rite 4510-36-101-313 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-36-101-313 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-36-101-313 is a standard-duty mortise deadlatch designed for flexible traffic control in hospitals, banks, and commercial buildings. Its reverse-key feature allows two-way traffic...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-35-201-628 1-1/8" Mortise Lock Adams Rite 4510-35-201-628 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-35-201-628 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-35-201-628 is a standard duty mortise deadlatch designed for controlled traffic flow in hospitals, banks, and commercial buildings. Its reverse-turn key feature allows two-way...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
  • Adams Rite 4510-35-201-313 1-1/8" Mortise Lock Adams Rite 4510-35-201-313 1-1/8" Mortise Lock
    Quick view

    Adams Rite 4510-35-201-313 1-1/8" Mortise Lock

    Adams Rite
    MSRP: $119.00
    $79.70
    The Adams Rite 4510-35-201-313 is a standard-duty mortise deadlatch designed for facilities requiring flexible traffic control, such as hospitals, banks, and retail stores. Its reverse-turn key...
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $119.00
    $79.70
    Subtotal:
    Add to Cart
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