Welcome to D&D HARDWARE INDUSTRIAL Co., Ltd . 
D&D, Leader in Commercial Door Hardware
Pls inquire to  sales@danddhardware.com
/ / :+86 139 2903 7292

Certification

ANSI/BHMA A156.13

Grade 1 Certified — exceeding one million cycle durability under laboratory conditions

UL 10C Fire Rating

Three-hour fire endurance listing, ensuring compliance with fire door assembly mandates

BHMA Listed

Independently verified by the Builders Hardware Manufacturers Association for performance and quality

Security Tiers- Select Your Protection Level

ANSI/BHMA classifies mortise locks into three performance tiers. D&D Hardware focuses on 

Grade 1 — the highest tier — purpose-built for environments where failure is not an option.

High-Traffic Commercial & Institutional

1,000,000+
operational cycles
Security Level: Maximum

Door Hinges

  Peak forced-entry protection
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  Highest duty cycle endurance
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  Mandatory for fire-rated assemblies
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  Ideal for mission-critical zones
Typical Use: Hospitals, Airports, Government, Data Centers

Medium-Traffic Commercial

 
500,000
operational cycles
Security Level: Enhanced

Door Hinges

  Strong forced-entry resistance
──────────────────────────
  Suitable for steady daily use
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  Cost-efficient for office environments
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  Standard commercial specification
Typical Use: Offices, Retail, Educational Facilities

Light Commercial & Residential

 
200,000
operational cycles
Security Level: Standard

Door Hinges

  Baseline security coverage
──────────────────────────
  Residential-grade protection
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  Light-duty applications
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  Budget-conscious projects
Typical Use: Residential, 
Light Commercial

Technical Data - Specifications & Dimensions

Every measurement, every material choice, every tolerance is optimized for maximum security and seamless integration 

with standard ANSI door preparations.

新增页签

Lock Case
    heavy gauge stainless steel 304
Lock Front     L8”x W1.26”x H0.18”stainless steel 304
Strike Plate     L4.88”x W1.26”x 1.87”stainless steel 304
Deadbolt     1”projection, one-piece hardened stainless steel 304
Latchbolt     0.75”projection, one-piece hardened stainless steel 304
Auxiliary Latch Deadlock     0.5”high, stainless steel 304 and non-handed
For Door Thickness     1-3/4” (44mm) standard
Backset     2-3/4” (70mm)
Center to Center     3-5/8” (92mm)
Handing     Non-handed, Field reversible
Cylinder     Solid brass cylinder and plug. 5 or 6-pin are available on standard cylinders.
    6-pin is available for interchangeable core cylinder.
Keyways    “C” keyway standard on standard cylinder. “E” keyway standard on I/C cylinder.
Application     For wood door and Metal door

Complete Product Range – Multiple ANSI Mortise Lock Function

Over 20 distinct lock configurations sharing one universal chassis. Each model is manufactured from SUS304 

stainless steel and certified to ANSI/BHMA Grade 1 with UL 10C 3-hour fire rating.

Product
Model DDAL01 DDAL04 DDAL05 DDAL06 DDAL07 DDAL09 DDAL12 DDAL13 DDAL14 DDAL15 DDAL16 DDAL17 DDAL18 DDAL02 / DDAL19 DDAL20 DDAL21 DDAL22 DDAL29 DDAL30 DDAL32 DDAL33 DDAL34 DDAL35
Type Passage / Closet Latch Entry Lock Classroom Lock Holdback Lock Storeroom / Closet Apartment / Exit / Public Toilet Dormitory / Exit Lock Dormitory / Exit Lock Door Lock Hotel Guest Lock Dead Lock Dead Lock Dead Lock Privacy / Bedroom / Bath Apartment Corridor Door Room Door Lock Privacy / Bedroom / Bath Classroom Dead Lock Asylum / Institutional Intruder Latch Bolt Lock Intruder Dead Bolt Lock Intruder Dead Bolt Lock Store Door Lock
Functional Description
Latch is always free — lever retracts it from both sides at any time. No locking mechanism. Designed for corridors, closets, and areas requiring unimpeded two-way traffic.
Lever operates from both sides unless the exterior lever is disabled via a stop button or mechanical hold. When locked out, the exterior key or interior lever retracts the latch. Equipped with auxiliary dead latch for anti-shim protection. Both levers function freely until the exterior side is secured by key from outside. Once engaged, only a key (exterior) or the interior lever releases the latch. Auxiliary dead latch included for tamper resistance. Similar to classroom function with an added holdback feature — the latch can be locked in the retracted position by key, allowing hands-free passage. Interior lever always overrides. Auxiliary dead latch standard. Exterior lever is permanently inoperative — entry is by key only from outside. Interior lever always retracts the latch freely. Ideal for storage areas, utility rooms, and restricted-access closets. Auxiliary dead latch fitted. Lever works from both sides unless the exterior is locked via interior key. When exterior is secured, a key from outside or the interior lever releases the latch. Auxiliary dead latch prevents manipulation. Lever operates freely from both sides unless exterior is disabled by stop mechanism. Deadbolt is thrown by exterior key or interior thumbturn, and retracted the same way. Interior lever retracts both bolts simultaneously while exterior remains locked. Lever functions from both sides. Deadbolt is projected by exterior key or interior thumbturn. Activating the interior lever retracts both latch and deadbolt together and unlocks the exterior side — enabling quick egress. Latch is lever-operated from either side at all times. Deadbolt is independently controlled by key from both exterior and interior — providing dual-layer security with unrestricted passage when deadbolt is retracted. Exterior lever is always inoperative — guests enter by key only. Interior thumbturn projects the deadbolt for privacy. Interior lever retracts both bolts for immediate egress. Auxiliary dead latch included. Deadbolt only — no latch bolt. Operated by key from both sides. Provides supplemental security for doors already equipped with a separate latch set, or for gates and utility access points. Deadbolt only — key-operated from exterior, thumbturn-operated from interior. Offers convenient interior control without requiring a key, while maintaining keyed security on the outside. Deadbolt only — key-operated from exterior side exclusively. No interior control mechanism. Suited for areas requiring one-directional keyed security such as equipment enclosures or utility panels. Lever retracts latch from both sides. Deadbolt is engaged by interior turn and released by exterior emergency coin-turn. Interior lever retracts both bolts — ensuring occupants can always exit freely. Lever works from both sides unless exterior is mechanically stopped. Deadbolt is controlled by exterior key or interior thumbturn. Exterior key operates both bolts. Interior lever retracts both bolts while exterior remains locked. Latch deadlocks when exterior lever is disabled or deadbolt is thrown. Lever retracts latch from either side freely. Deadbolt is independently operated — key from exterior, thumbturn from interior. A versatile configuration for interior room doors requiring optional deadbolt security. Lever functions from both sides unless exterior lever is locked by interior thumbturn. Unlocking occurs by operating the interior lever, closing the door, or using the exterior emergency release. No key required. Deadbolt only — projected by exterior key. Interior turn retracts the deadbolt but cannot project it. Designed for classroom lockdown scenarios where teachers retract from inside but only authorized personnel lock from outside. Both levers are permanently inoperative — latch is operated exclusively by key from either side. Designed for psychiatric facilities, detention areas, or any environment where lever access must be restricted to authorized key-holders only. Auxiliary dead latch fitted. Lever works from both sides unless exterior is locked by key from either inside or outside. When secured, latch is released by key from either side or by interior lever. Provides lockdown capability from both directions. Auxiliary dead latch standard. Lever operates from both sides unless exterior is key-locked from inside or outside. Deadbolt retracts by key from either side. Interior lever retracts both bolts and unlocks the exterior — combining intruder lockdown with emergency egress. Lever functions from both sides unless exterior is key-secured from either direction. Deadbolt retracts by key from both sides. Interior lever retracts both bolts and frees the exterior. Auxiliary dead latch engages automatically when deadbolt is thrown. Lever operates from both sides unless exterior is disabled by stop or mechanical means (non-key). Deadbolt is key-operated from both sides independently. Combines store-hour flexibility with after-hours deadbolt security.

Engineering Highlights - Precision That Protects

Each lock in the D&D range is the result of meticulous engineering — designed to reduce complexity 

on-site while maximizing security performance over decades of daily use.

One Body, Multiple Configurations

A single lock chassis accommodates passage, privacy, classroom, storeroom, entrance, and deadbolt modes — dramatically simplifying your procurement and warehouse management.

On-Site Handing Reversal

Switch between left-hand and right-hand operation directly at the job site without disassembling the lock body. Cuts installation labor and eliminates ordering errors.

Status-at-a-Glance Indicator

The interior thumbturn provides an instant visual cue of the lock's engaged or disengaged state, giving building occupants immediate awareness of their security status.

Autonomous Lever Operation

Each lever handle functions independently with a built-in auxiliary dead latch that defeats shimming and latch manipulation attempts — a critical defense layer.

Full SUS304 Stainless Construction

From the lock shell to the face plate, every exposed component is fabricated from marine-grade SUS304 stainless steel, delivering superior corrosion resistance in any climate.

Metal & Wood Door Ready

Engineered to fit standard ANSI door preparations on both hollow metal and solid wood doors — ideal for new builds and renovation projects without custom modifications.

Components for ANSI Mortise Locks

Lever Handles

D&D Hardware provides premium SUS304 stainless steel lever handles engineered for ANSI mortise locks, offered in a wide selection of contemporary and classic profiles.

Cylinders

D&D Hardware delivers ANSI-standard solid brass cylinders featuring hardened SS304 head covers, supporting 5-pin, 6-pin, and interchangeable core keying systems.

Cam Type

Apart from the types shown in the picture, there are other cam design available for selection.

Thumbturns & Indicators

D&D Hardware crafts robust thumbturn assemblies and visual occupancy indicators from solid stainless steel, compatible with all standard ANSI mortise lock configurations.

Trim Rings & Compression Collars

D&D Hardware produces high-grade stainless steel trim rings and compression collars for ANSI mortise locks, available in multiple diameters and surface treatments.

Escutcheon Plates & Roses

D&D Hardware supplies precision-machined escutcheon plates and decorative roses in round format, designed for seamless integration with ANSI mortise lock bodies.

Deployment Scenarios- Trusted Across Critical Industries

From hospital fire corridors to government secure zones, D&D ANSI mortise locks are specified by architects and 

facility managers who demand proven reliability in the most demanding environments.

Frequently Asked Questions

Answers to the most common inquiries from architects, contractors, and procurement teams.

Contact us For Increase Your Profits and Market Shares

D & D Hardware has established long business relations with customers from America, Europe, Middle East and Asia, Selling our items are proved to be profitable,collection approve by consultants,international branded quality with certifications from Intertek/UL.

Tel/WhatsApp/WeChat

+86 139 2903 7292

Address

12th Floor , Building 2, No. 898, KeChuang Technical Zone, Jiangmen Avenue, Pengjiang District, Jiangmen City, Guangdong, China

Contact us For Increase Your Profits and Market Shares

Contanct Us

Get Famous Branded Quality at Factory Cost 12th Floor, Building 2, No.898, KeChuang Technical Zone,Jianghai Dist.Jiangmen City,Guangdong,China
   +86 139 2903 7292
   +86 139 2903 7292
  +86 139 2903 7292
 David Jian(Managing Director)
 Ms Judy(Financial / Account Dept. )

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