Trimco’s 3921 Series Decorative Knob Surface Bolts carry a classical design and are offered in various architectural finishes. With multiple standard size and strike options, as well as customization capabilities, these surface bolts are flexible enough for a wide range of applications while maintaining their durability.
- Solid bronze or brass construction.
- Available in various architectural finishes.
- 8", 12", 28" and 24" standard lengths.
- Multiple strike options for maximum flexibility.
- Custom options available.
- 3921-8 8" Heavy Duty Surface Bolt, Decorative Knob
- 3921-12 12" Heavy Duty Surface Bolt, Decorative Knob
- 3921-18 18" Heavy Duty Surface Bolt, Decorative Knob
- 3921-24 24" Heavy Duty Surface Bolt, Decorative Knob
- Commercial & Industrial Buildings
- Government & Military Facilities
- Multifamily & Mixed-Use
- Office Buildings
This product meets the following standards.