ABH 4421 Surface Mounted Overhead Door Stop | US32D Satin Stainless Steel

The ABH 4421 is a high-performance, medium-duty surface mounted overhead door stop designed specifically for narrow door openings. This specialized architectural hardware serves as a critical solution for door restoration and protection, preventing damage to the door, frame, and adjacent walls caused by over-swinging. Engineered with a sleek US32D Satin Stainless Steel finish, the 4421 model is a premier solution for commercial door security in schools, retail spaces, and healthcare environments.

Professional Protection for Specialized Openings

The ABH 4421 is optimized for smaller door widths, providing robust control where standard-sized stops may not fit. It acts as a proactive solution for door surface repair by absorbing the impact of daily traffic:

• Automatic Stop Functionality: Designed to provide a physical limit to the door's swing, protecting hinges and hardware from stress. This unit is Warnock Hersey listed for "Stop Only" applications, meeting high industry safety standards.
• Dual Functionality (Hold-Open Adaptable): While primary as a stop, this unit features field-adaptable functions. The hold-open mechanism can be engaged to allow for automatic hold-open and release by a simple push and pull—a vital feature for meeting ADA requirements in high-access areas.
  
• Customizable Stop Points: The single-point stop/hold-open can be configured in 5-degree increments from 85° to 110°, allowing for precise control of the opening angle to accommodate room layouts.
  
• Universal Non-Handed Design: The 4421 is completely non-handed and reversible, ensuring a seamless installation on both left and right-hand doors, which simplifies inventory for facility maintenance teams.
  

Heavy-Duty Construction & Thru-Bolt Stability

Even on smaller doors, the leverage exerted on overhead hardware is significant. The ABH 4421 is built to remain secure under constant use:

• High-Strength Thru-Bolt Mounting: To ensure the hardware never pulls loose or creates door face damage, this unit is installed using thru bolts (included). This "sandwich" style mounting provides superior stability over surface screws alone, acting as a permanent solution for door edge reinforcement.
• Architectural Stainless Steel Finish: Finished in US32D (630), the 3/4” wide stainless steel channel and 3/16” thick arm are highly resistant to corrosion and harsh cleaning chemicals.
• Precision Internal Sliding Block: The hold-open and stop mechanism utilizes a high-durability sliding block within the channel to ensure smooth, quiet, and consistent operation for the life of the opening.

Technical Details & Specifications

• Brand: ABH Manufacturing
• Model: 4421 (Medium Duty)
• 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 4421?

For narrow commercial doors that require a professional-grade limit, the ABH 4421 is the highest-performing solution for commercial door security. Its combination of thru-bolt stability and adaptable functionality makes it a long-term solution for door restoration. By effectively controlling the door's range of motion, the 4421 prevents expensive frame fatigue and wall damage, ensuring your facility maintains a safe and professional appearance.