ABH N4021 Concealed Mount Overhead Stop - Medium Duty, S3 (BZPC)The ABH N4021 Concealed Mount Overhead Holder Stop is engineered for medium-duty performance, making it an ideal choice for moderate traffic environments and medium weight doors in commercial applications. This innovative holder and stop combination offers versatile functionality, including stop, hold-open, and friction features, ensuring optimal control for both single and double acting doors.
Constructed from durable steel, the N4021 boasts a concealed mount design that enhances aesthetic appeal while providing robust support. The shock-absorbing spring mechanism allows for a cushioned transition between open positions, offering a smooth 3° to 5° cushion before reaching the dead-stop. This thoughtful design not only enhances user experience but also prolongs the life of the door hardware.
The N4021 is UL Listed for fire door assemblies, applicable to 20-minute wood and 90-minute hollow metal door assemblies, ensuring compliance and safety in critical applications. With an operating range of 85° to 110° in 5° increments, this holder stop accommodates various door configurations and thicknesses, starting from a minimum of 1-3/8". Available in a range of finishes, including the S3 (BZPC), the N4021 is a reliable and adaptable solution for architects, contractors, and facility managers seeking quality door hardware.
Concealed Mount Overhead Holder and Stop - Medium Duty, Concealed Mount Medium Duty - Stop, S3 (BZPC)
Concealed mount medium duty overhead holder and stop providing stop, hold-open and friction functions for moderate traffic and medium weight doors in commercial applications.
N4021: Concealed Mount Medium Duty - Stop
Key Features
- Concealed Mount Design
- Medium Duty Construction
- Single or Double Acting
- Shock Absorbing Spring
- UL Listed for Fire Door Assemblies (Stop Function Only)
Specifications
| Model | N4021 |
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| Finish | S3 (BZPC) |
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| Finish Code | S3 |
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| Family | 4000 / N4000 |
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| Material | Steel |
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| Finishes | US3, US4, US9, US10, US10B, US26, US32, US32D, S1/ALPC, S2/BSPC, S3/BZPC, S4/BSPC, S5/DBPC, S8/WSPC, Custom Finishes Available |
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| Functions Available | Stop, hold-open, friction |
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| Door Configuration | Single or double acting |
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| Operating Range | 85° to 110° opening (5° increments) |
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| Door Thickness | 1-3/8" minimum |
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| Shock Absorption | 3° to 5° cushion before dead-stop |
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| Weight | 2 lbs. average per unit |
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| Fire Rating | UL Listed for 20-minute wood and 90-minute hollow metal door assemblies (stop function only). |
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Non-handed design. For interior or exterior use on moderate traffic applications.
Features
- Shock Absorbing Spring
- Single or Double Acting
- UL Listed for Fire Door Assemblies (Stop Function Only)
- Concealed Mount Design
- Medium Duty Construction
Attributes
BRAND_ NAME: ABH
Door Configuration: Single or double acting
Door Thickness: 1-3/8" minimum
Family: 4000 / N4000
Finish: S3 (BZPC)
Finish Code: S3
Finishes: US3, US4, US9, US10, US10B, US26, US32, US32D, S1/ALPC, S2/BSPC, S3/BZPC, S4/BSPC, S5/DBPC, S8/WSPC, Custom Finishes Available
Fire Rating: UL Listed for 20-minute wood and 90-minute hollow metal door assemblies (stop function only).
Functions Available: Stop, hold-open, friction
Material: Steel
Model: N4021
Operating Range: 85° to 110° opening (5° increments)
Shock Absorption: 3° to 5° cushion before dead-stop
Weight: 2 lbs. average per unit
