Commercial Storefront Door Lock | Narrow-Stile Hook Bolt | Adams Rite-Style Mortise Prep

Secure commercial storefront and narrow-stile aluminum doors with this Mortise Hookbolt Lock Body featuring a 31/32" backset.

The hook-shaped locking bolt engages the compatible strike or keeper to provide strong resistance against pulling, spreading, and prying at the door edge. This style of lock is commonly used on aluminum storefront doors, commercial glass entrances, and sliding-door systems where a narrow mortise lock body is required.

Key Features

• Commercial-grade mortise hookbolt lock body

• 31/32" backset

• Current CDW SKU: M-HBL-3132

• Hook-style locking bolt

• Designed for narrow-stile commercial doors

• Compatible with common Adams Rite-style mortise preparations

• Accepts a standard compatible mortise cylinder

• Cylinder sold separately

• Suitable for storefront and sliding-door applications

• Heavy-duty commercial construction

• Helps resist prying and door-spreading attacks

• Ideal for replacement and repair applications

• Suitable for manual and compatible automatic sliding-door systems

31/32" Backset

This model uses a:

31/32" Backset

Backset is measured from the edge of the door or faceplate to the centerline of the cylinder.

The 31/32" backset is commonly used in narrow-stile aluminum storefront door systems where limited stile depth requires a compact mortise lock body.

Always measure the existing lock before ordering.

Hookbolt Locking Design

Unlike a straight deadbolt, the hookbolt extends and rotates into the compatible keeper.

This hooked configuration helps resist forces attempting to:

• Pry the door away from the frame

• Spread the door and jamb apart

• Pull a sliding panel away from its locked position

• Force the locking bolt out of the strike

The current CDW configuration specifically uses a hook-style bolt for commercial storefront and sliding-door security.

Narrow-Stile Storefront Application

This mortise lock body is well suited for commercial aluminum entrance systems where the lock must fit inside a narrow vertical door stile.

Typical applications include:

• Aluminum storefront doors

• Commercial glass entrance doors

• Narrow-stile doors

• Sliding aluminum doors

• Automatic sliding-door panels

• Retail entrances

• Office storefronts

• Commercial entry systems

Adams Rite-Style Compatibility

The lock body is designed around common Adams Rite-style storefront mortise preparations, making it useful for replacement applications where an existing narrow-stile hookbolt lock is being serviced.

Because commercial storefront systems vary, always compare:

• Backset

• Lock-body dimensions

• Faceplate preparation

• Cylinder location

• Strike location

• Existing door cutout

before replacing an existing lock.

Standard Mortise Cylinder Operation

The lock accepts a compatible standard mortise cylinder for keyed operation.

Depending on the opening, the lock may also be used with compatible:

• Key cylinders

• Thumbturn cylinders

• Cylinder accessories

• Storefront door trim

Cylinder Not Included

Unless specifically stated otherwise, the:

Mortise Cylinder Is Sold Separately

Verify the required:

• Cylinder length

• Keyway

• Cam

• Keying

• Finish

before ordering.

Commercial-Grade Construction

The current Commercial Door Worx product uses a steel or zinc-based lock construction depending on configuration, with faceplate material and finish varying by model.

This makes the lock suitable for routine commercial use in high-traffic storefront and entrance applications.

Product Specifications

Product Type: Mortise Hookbolt Lock Body
Current CDW SKU: M-HBL-3132
Bolt Type: Hook Bolt
Backset: 31/32"
Mounting: Mortise
Door Type: Narrow-Stile Commercial Door
Cylinder Compatibility: Standard Compatible Mortise Cylinder
Cylinder Included: No, unless specifically stated
Primary Application: Storefront / Sliding / Commercial Entrance Door
Preparation Style: Adams Rite-Style Commercial Mortise Prep
Use: Replacement / Repair / New Installation

Common Applications

Ideal for:

• Retail storefronts

• Aluminum entrance doors

• Commercial glass doors

• Shopping centers

• Restaurants

• Office buildings

• Schools

• Medical facilities

• Automatic sliding entrances

• Manual sliding doors

• Commercial facilities

• High-traffic entry doors

Replacement Applications

This lock body is an excellent choice when an existing storefront hookbolt is:

• Worn

• Damaged

• Binding

• Difficult to lock

• Missing

• No longer engaging the strike properly

Before replacing the lock, inspect the door, strike, and cylinder to determine whether additional components also require service.

Measuring the Backset

To verify the correct lock:

1. Remove or inspect the existing lock body.

2. Measure from the door edge or faceplate to the centerline of the cylinder.

3. Confirm the measurement is 31/32".

4. Compare the existing lock-body and faceplate dimensions.

5. Verify the strike and cylinder preparation.

Do not select a replacement lock solely by appearance.

Important Compatibility Note

Hookbolt lock bodies are available in several common backsets, including:

• 31/32"

• 1-1/8"

• 1-1/2"

Commercial Door Worx currently lists these as separate selectable configurations.

This listing is specifically for:

31/32" Backset

What's Included

(1) Mortise Hookbolt Lock Body – 31/32" Backset