D&D HARDWARE specialize in providing comprehensive door hardware solutions for both wooden and metal door applications, offering an extensive range of high-quality products designed for durability, security, and seamless functionality. Our product includes door hinges, door locks, lever handles, door closers, panic bars, lock cylinders, door stoppers door bolts, door viewers, glass door hardware, and door accessories etc..
Beyond individual components, we deliver complete door opening systems tailored to meet the demands of residential, commercial, and institutional projects. Whether you need fire-rated hardware for safety compliance, sleek designs for modern aesthetics, or heavy-duty mechanisms for high-traffic areas, our products are manufactured to meet international standards (BS EN, CE, UL, ANSI, BHMA). With a focus on innovation, quality, and customization, we serve architects, contractors, and distributors worldwide, ensuring every solution enhances performance, security, and user experience. Partner with us for end-to-end door hardware expertise—from product selection to technical support.
A door chain, security chain, or security door chain consists of a small chain attached to the door frame, which attaches to a track on the door for security purposes. It is a type of lock that is often used along with other types of locks to secure a door.Door chains are mainly intended to allow a person inside a structure to open the door slightly for purposes of communicating with individuals outside or exchanging small objects through the door while still preventing the individuals outside from gaining unauthorized access into the structure.