Latch bolt operated by lever from either side. Dead bolt operated by key from outside or thumb turn from inside.
| Product Model | DDAL21 F21 |
| Application | Wood Door, Metal Door, Fire Rated Door, etc. |
| Certification and Compliance | ANSI/BHMA A156.13-2005 Grade 1, UL Fire Rated Certificated |
| Finish | SSS, PSS, PVD, PB, AB, AC, MB |
| Lockcase | Heavy Gauge Stainless Steel for Corrosion Resistance |
| Deadbolt | Solid Casting SUS304, Project 1"(25.4mm) |
| Latchbolt | Solid Casting SUS304, Project 3/4"(19mm), Anti-Friction Two Pieces and Can be Reversible |
| Auxiliary Latchbolt | Stainless steel |
| Forend | Stainless steel Grade 304 |
| Strike | Stainless steel Grade 304, Non-Handed |
| Door Thickness | 45mm to 55mm As Standard |
| Backset | 2-3/4" (70mm) |
| Center to Center | 3-5/8"(92mm) |
| Door Handing | Left Hand and Right Hand |
| MOQ | 200PCS |
| 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.
