Door Knob Lock is a widely used locking solution that combines a rotating handle and an internal locking mechanism within a compact structure. The lock is activated by turning the knob, which retracts the latch and allows the door to open. Commonly installed on interior and exterior doors, door knob locks offer a practical balance between security and convenience. Their standardized dimensions and simple installation make them suitable for large-scale housing projects and commercial applications requiring efficient hardware solutions.
Engineered for durability, security, and consistent performance across residential and commercial applications.
Flexible options available for wholesale, project supply, and OEM/ODM requirements.
Commercial Door Knob with Lock offers a practical and durable locking solution for high-frequency door applications in residential and commercial environments. Manufactured from stainless steel, it maintains consistent performance and surface integrity under daily use, while the brass cylinder and keys provide stable locking accuracy and extended service life. Each set includes a complete assembly package with knob lockset, latch, striking plate, fixing materials, and installation manual, allowing efficient on-site fitting without additional components. With selectable backsets of 60mm and 70mm and mechanism options including tubular and cylindrical types, this lockset supports flexible configuration for bulk orders, project installations, and wholesale distribution.
| Product Model | DDLK001 |
| Cylinder + Keys | Brass |
| Knob | Stainless Steel |
| Rosette | Stainless Steel |
| Rosette Diameter | 65mm, 75mm |
| Finish | SSS, AB, AC, PB, US10B |
| Suitable For Door | Flush Timber / Wooden / Aluminium / Steel Doors |
| Mechanism Option | Tubular Type, Cylindrical Type |
| Door Thickness | 1-3/8" to 1-3/4" (35mm to 45mm) |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) |
| MOQ | 100PCS |
| Package | 1pc / poly bag, white box / color inner box, standard export carton |
| Sample Time | 5-7 working days |
| Production Lead Time | 30-35 days normally |
| Shipping Port | Jiangmen, China / Shenzhen, China |
Reliable access control starts with hardware that performs consistently across daily use and high-traffic conditions. The Double Sided Lock Door Knob offers a practical locking solution for both interior and light commercial applications, combining mechanical stability with a clean architectural appearance. This commercial lockset fits a wide range of door types including flush timber, wooden, aluminium, and steel doors, making it suitable for diverse installation environments. A solid stainless steel knob and rosette provide durability against wear, while the brass cylinder and matching brass keys ensure smooth key operation and dependable locking performance over time. Each set is supplied complete with latch, striking plate, fixing materials, and installation manual, enabling straightforward setup without additional sourcing.
| Product Model | DDLK003 |
| Cylinder + Keys | Brass |
| Knob | Stainless Steel |
| Rosette | Stainless Steel |
| Rosette Diameter | 65mm, 75mm |
| Finish | SSS, AB, AC, PB, US10B |
| Suitable For Door | Flush Timber / Wooden / Aluminium / Steel Doors |
| Mechanism Option | Tubular Type, Cylindrical Type |
| Door Thickness | 1-3/8" to 1-3/4" (35mm to 45mm) |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) |
| MOQ | 100PCS |
| Package | 1pc / poly bag, white box / color inner box, standard export carton |
| Sample Time | 5-7 working days |
| Production Lead Time | 30-35 days normally |
| Shipping Port | Jiangmen, China / Shenzhen, China |
The Double Cylinder Door Knob is a secure locking solution engineered for both residential and light commercial entry systems where controlled access from both sides is required. Featuring a dual-key operation, this lockset enhances door security by requiring a key for entry and exit, making it suitable for exterior doors, side entrances, and areas where additional protection is necessary. The combination of a stainless steel knob and rosette ensures a solid structural presence, while the internal brass cylinder and brass keys provide reliable locking performance with smooth key rotation. Each set is supplied complete with latch, striking plate, fixing materials, and installation manual, ensuring a straightforward installation process for bulk orders and project applications.
| Product Model | DDLK004 |
| Material | stainless steel |
| Finish | Satin Stainless Steel, Polished Stainless Steel, Polished Brass, Matt Black, Physical Vapor Deposition, Antique Brass, Antique Copper |
| Suitable for Door | Wooden door, Metal door, Interior door, Outer door etc. |
| MOQ | 100PCS |
| Package | 1pc/poly bag, white box / color inner box, standard export carton. |
| Sample time | 5-7 working days |
| Production Lead Time | 30-35 days normally |
| Shipping Port | Jiangmen, China / Shenzhen, China |
Door knob locks are widely used in residential housing, apartments, offices, and hospitality projects where convenient access control is required. They are commonly installed on bedroom doors, bathrooms, interior passages, and secondary entry points. In large-scale developments, these locks provide a uniform hardware solution that supports efficient installation and maintenance. Their versatility allows project planners to select different configurations based on privacy and security requirements across various spaces.
See real product details, structure, and usage scenarios through our visual demonstrations.
Please contact us by email or phone with your detailed requirements. Our team will reply within 24 hours. In addition to door hardware, D&D also delivers complete door opening solutions.
We accept T/T, D/P, Western Union, and L/C as payment methods.
We are a manufacturer with over 18 years of experience and are an SGS-audited factory specializing in architectural hardware.
Yes. Up to three samples can be provided free of charge. Customers are required to arrange a courier account for freight collection.
We mainly use SUS304 and SUS316 stainless steel, with SUS201 available for selected product applications.
All our products are backed by a 10-year mechanical warranty.
Yes. We operate a complete quality control system, with strict inspection and monitoring at every stage of mass production following standardized procedures.
Yes. We provide both OEM and ODM solutions and have extensive experience collaborating with well-known global brands.
Our products carry CE and UL certifications, and all designs are developed in accordance with international standards such as EN/CE, UL, ANSI, and BHMA.