Square Deadbolt Lock DDLK021-A and DDLK021-B offer a clean geometric appearance combined with reliable mechanical security for modern door systems. The square rosette structure delivers a sharp and contemporary visual profile, making it suitable for both residential and light commercial environments. Equipped with a solid brass cylinder and precision-engineered internal components, this deadbolt lock ensures stable locking performance and consistent operation over long-term use. The adjustable backset allows flexible installation across standard door preparations, while compatibility with common door thickness ranges simplifies project integration. Available in both single cylinder and double cylinder configurations, it supports different access control requirements, providing a balanced combination of security, adaptability, and aesthetic consistency for bulk order and project applications.
| Product Model | DDLK021-A | DDLK021-B |
| Type | Single Cylinder Deadbolt Lock | Double CylinderDeadbolt Lock |
| Cylinder + Keys | Brass | |
| Rosette | Zinc Alloy | |
| Square Rosette | 65mm × 65mm | |
| Door Thickness | 1-3/8" to 1-3/4" (35mm to 45mm) | |
| Backset | Adjustable 2-3/8"(60mm),2-3/4"(70mm) | |
| Finish | SSS, AB, AC, PB, US10B | |
| Mechanism Option | Tubular Type | |
| 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 | |
D&D Hardware is a professional manufacturer and supplier of architectural door hardware and complete door opening solutions. With over 18 years of manufacturing experience and ISO 9001 certification, we serve global customers from our production base in China, delivering reliable hardware solutions for metal doors, wooden doors, and fire-rated doors.
Our product portfolio covers a full range of commercial and architectural hardware, including door hinges, door locks, lever handles, door closers, exit devices, door stoppers, door bolts, and related accessories. In addition to standard product lines, we offer flexible customization options to support specific project requirements, while ensuring each product meets the functional, safety, and durability demands of modern building applications across diverse environments.
