This adjustable spring door hinge from National Hardware is made from cold rolled steel with a satin nickel finish. It is UL approved for fire doors up to 3 ft × 7 ft and fits standard hinge cutouts, making it suitable for retrofit installations.
The hinge supports doors weighing up to 30 lb and features adjustable closing speed and tension, allowing you to customize the door’s closing action. The standard fit design simplifies installation without requiring cutout modifications.
Features and Benefits
- 30 lb Weight Capacity: Accommodates standard door applications.
- Adjustable Closing Speed and Tension: Customize closing action to match your door’s performance needs.
- Cold Rolled Steel: Durable construction with satin nickel finish.
- Standard Hinge Cutout Fit: Works with existing cutouts, simplifying retrofit projects without modification.
- UL Approved for Fire Doors: Rated for fire door applications up to 3 ft × 7 ft.
- Eight Mounting Holes: Secure installation with multiple fastening points.
Specifications
- Brand: National Hardware
- Model: N350-777
- Size: 3.5 in. × 3.5 in.
- Material: Cold rolled steel
- Finish: Satin nickel
- Weight Capacity: 30 lb
- Mounting Holes: 8
- Adjustable closing speed and tension
- Compatible with fire doors up to 3 ft × 7 ft
