ABH 4431 Surface Mounted Friction Hold-Open Overhead Door Stop | US32D Satin Stainless Steel

The ABH 4431 is an architectural-grade, medium-duty surface mounted overhead door stop featuring a specialized friction hold-open mechanism. Designed for narrow door openings, this hardware is a premier solution for door restoration that allows a door to be held open at a specific position through adjustable tension. Crafted from heavy-duty stainless steel, the 4431 model serves as a robust solution for commercial door security and wall protection in office suites, retail backrooms, and healthcare facilities.

Adjustable Tension for Specialized Narrow Openings

The ABH 4431 is optimized for smaller door widths, providing controlled movement where standard-sized stops may not be applicable. It acts as a proactive solution for door surface repair by managing the door's swing with precision:

• Customizable Friction Hold-Open: Unlike standard click-in hold-opens, the friction mechanism allows the door to stay open at a set point. The resistance can be adjusted to suit the specific traffic needs of the room, helping the facility meet ADA requirements for ease of passage.
• Field Adaptable Functionality: This unit is multi-functional and can be modified on-site. The friction mechanism can be adjusted to act as a Stop Only function, providing a versatile solution for door restoration if room usage changes.
• Variable Stop Points: The stop/hold-open point can be set in 5-degree increments ranging from 85° to 110°, allowing you to protect wall-mounted furniture or equipment by stopping the door at a specific angle.
  
• Non-Handed & Reversible: The 4431 is completely non-handed, making it a reliable stock item for maintenance teams as it can be installed on both left and right-hand doors without specialized modification.
  

Industrial-Grade Stability with Thru-Bolt Engineering

Even on narrow doors, overhead hardware is subject to significant stress. The ABH 4431 is built to remain secure and stable through thousands of cycles:

• High-Strength Thru-Bolt Mounting: To ensure the unit remains rigid and never pulls loose from the door face, it is installed using thru bolts (included). This "clamping" method provides superior stability compared to standard screws, serving as a permanent solution for door edge reinforcement.
• Architectural Satin Stainless Steel: Finished in US32D (630), the 3/4” wide stainless steel channel and 3/16” thick arm are highly resistant to corrosion and withstand the aggressive cleaning agents used in commercial environments.
  
• Safety & Fire Compliance: When configured in the "Stop Only" function, this hardware is Warnock Hersey listed, ensuring it meets rigorous safety standards for manufactured door components.
• Precision Sliding Block: The internal mechanism utilizes a high-durability sliding block to ensure smooth, quiet, and consistent friction throughout the life of the product.

Technical Details & Specifications

• Brand: ABH Manufacturing
• Model: 4431 (Friction Hold-Open Series)
• Finish: US32D / 630 (Satin Stainless Steel)
• Door Frame Opening (Hinges): 18" - 23-15/16" Wide
  
• Door Frame Opening (Center Hung Pivots): 22" - 27-7/16" Wide
• Minimum Door Thickness: 1-3/8"
• Maximum Opening: 110 Degrees
• Fasteners: Wood screws, machine screws, and thru bolts included

Why Choose the ABH 4431?

For narrow commercial doors that require the ability to stay open under tension, the ABH 4431 is the highest-performing solution for commercial door security. Its combination of thru-bolt stability and adjustable friction makes it a reliable, long-term solution for door restoration. By effectively controlling the door's range of motion, the 4431 prevents expensive frame fatigue and wall damage while maintaining a professional architectural aesthetic.