Von Duprin 050356 55 Series Le...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$53.00
$39.26
Von Duprin 55 Series 55NL Cam, Left Hand

Von Duprin 050356 55 Series Left Hand NL Cam Replacement Part for Exit Devices

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Model: 50356
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$39.26
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Von Duprin 050356 55 Series Left Hand NL Cam Replacement Part for Exit Devices

Commercial-Grade Exit Device Replacement Component for 55 Series Hardware

The Von Duprin 050356 is a Left Hand NL Cam replacement part engineered specifically for the Von Duprin 55 Series exit device product line. Designed for commercial door hardware applications, this precision cam component ensures continued reliable operation of compatible 55 Series exit devices. As a Grade 1 commercial replacement part, it meets the performance standards required for demanding professional environments where dependable exit device function is essential.

Professional Features & Benefits

  • 55 Series Compatibility: Engineered specifically for Von Duprin 55 Series exit devices, ensuring a precise fit and reliable integration with existing hardware.
  • Left Hand Configuration: Factory-designated left hand orientation for correct installation on compatible left-hand exit device assemblies.
  • Grade 1 Performance: Meets Grade 1 commercial standards, delivering the durability and reliability required for high-traffic commercial door hardware applications.
  • OEM Replacement Part: Genuine Von Duprin replacement component designed to restore original exit device function and maintain system integrity.
  • Commercial-Grade Construction: Built to Von Duprin's professional specifications for use in commercial environments where consistent performance is critical.
  • Exit Device Parts & Accessories Classification: Categorized as an exit device part within the Von Duprin 55 Series product group, ensuring straightforward identification for maintenance and procurement.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 55 Series
  • Grade: Grade 1
  • Product Subgroup: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Type: Exit Devices Parts
  • Commercial/Residential: Commercial
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Fire Rating: No
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Von Duprin Quality?

Von Duprin exit device parts and accessories are manufactured to Grade 1 commercial standards, ensuring that every replacement component delivers the same level of performance as the original hardware. The 55 Series NL Cam is a genuine Von Duprin part, providing confidence that your exit device will continue to operate as intended after servicing. Engineered for demanding commercial applications where dependable performance and code compliance are essential.

Manufacturer Resources

Von Duprin 55 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
55 Series
Grade:
Grade 1
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Type:
Exit Devices Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Fire Rating:
No
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 50356 – Frequently Asked Questions

1) What is the Von Duprin 050356 part and what does the NL cam actually do in a 55 Series exit device?
The 050356 is the 55NL cam for Von Duprin 55 Series exit devices, in the left hand configuration. The NL cam is the internal component that ties night latch trim to the device, so pulling the outside trim with a key retracts the latch. When a 55 Series device stops responding to the outside night latch pull but still dogs and exits normally from the inside, the cam is the piece being replaced. It is a service part, not a complete device.
2) How do I know if I need the left hand or the right hand Von Duprin 55NL cam?
The 050356 is the left hand cam only, and handing is not adjustable on this part. Hand the door the way the trade does it: stand outside the door on the side you push to enter, and if the hinges are on your left it is a left hand opening. Order the opposite hand cam if the hinges fall on the right. Fitting the wrong hand cam means the night latch trim will not retract the latch.
3) Will a Falcon 610061 top rod work in place of a Von Duprin 55 Series NL cam?
No. These are two different components of an exit device. The Von Duprin 050356 is the left hand NL cam, a replacement part for Von Duprin 55 Series exit devices that carries the night latch action inside the device. The Falcon 610061 is a concealed vertical top rod for the 24 Series Monarch, built for F-25-C and F-25-CWDC devices, and it transmits motion up to a top latch rather than acting on the cam. A worn NL cam on a 55 Series device is replaced with the Von Duprin cam; the Falcon rod does not fit or function in that role.
4) My exit device will not hold the latch retracted for night latch operation. Is that the cam or the top latch?
It depends on which device you are servicing. On a Von Duprin 55 Series device, the night latch action runs through the NL cam, and the 050356 is the left hand cam sold as a replacement part for exactly that repair. On Accentra 7110 and 7120 devices the corresponding wear item at the head of the door is the top latch, replaced with the Accentra 60-7010-0049-999 component, and the fire-rated 7110F takes the 60-7010-0050-999 top latch. Identify the device brand and series first, because the cam and the top latch are not interchangeable parts.
5) Can I use the Von Duprin 55NL cam on a fire rated door opening?
The 050356 cam carries no fire rating. Night latch function relies on the outside trim retracting the latch, and fire exit hardware openings have their own hardware requirements. For a labeled fire door, specify fire exit hardware and the service parts the manufacturer calls for on that device rather than fitting this cam.
6) Is the Von Duprin 050356 an OEM part or an aftermarket copy?
Genuine Von Duprin. The 050356 is the factory 55NL cam, which matters on an exit device because the cam geometry sets how far the night latch trim rotation retracts the latch. Aftermarket cams that are close but not identical give you partial retraction and a door that binds under load.
7) Is the Von Duprin 55 Series rated for high traffic commercial buildings like schools and hospitals?
The 55 Series is Grade 1 commercial hardware, which is the highest ANSI/BHMA durability tier and the one specified for high traffic openings in schools, hospitals, offices and government buildings. The 050356 cam is a Grade 1 commercial service part, so replacing it keeps the device at the level it was specified at. It is not a residential part.
8) My exit device will not latch at the top of the door. Is the 55NL cam the part I need?
No, that is a latch fault, not a trim cam fault. The NL cam only drives the night latch connection between outside trim and the device. A device that fails to latch at the head on a vertical rod application needs a top latch or rod. For other brands ZenSupply stocks the Accentra 7110/7120 exit device top latch and the Accentra 7110F top latch, and the Falcon 610061 24 Series Monarch concealed vertical top rod for F-25-C and F-25-CWDC devices.
9) I need a fire rated exit device repair part. Does the Von Duprin 050356 cam cover that?
The Von Duprin 050356 55 Series left hand NL cam is not a fire rated part. Among comparable exit device components, the Accentra 60-7010-0050-999 top latch is the one built for the 7110F device, where the F designation is the fire rated variant of that series, while the Accentra 60-7010-0049-999 top latch for the 7110 and 7120 is likewise not fire rated. On a labeled opening, match the repair part to the exact device model on the label rather than to the series alone.
10) Is an Arrow 16RCR-27 rim housing an alternative to the Von Duprin 050356?
No, they solve different problems on the door. The Arrow 16RCR-27 is an SFIC rim housing for 6 and 7 pin cores in the 24/25 Series, the piece that carries the cylinder for keyed access from the outside. The Von Duprin 050356 is the left hand NL cam inside a 55 Series exit device. If the key turns but the device will not stay in night latch, the cam is the part to change; if the core itself needs to be housed or rekeyed, that is the rim housing side of the job.
11) What is the difference between a deadlatch replacement part and a cam replacement part on an exit device?
The deadlatch is the latching hardware that engages the strike, and the cam is the internal component that drives and holds the latch state. The Falcon 23981160 is a 2-3/8 inch square corner deadlatch replacement part for T Series devices, so it is chosen by backset and by corner style to match the existing door prep. The Von Duprin 050356 is a left hand NL cam for 55 Series exit devices, chosen by series and by handing rather than by backset, and it needs no change to the door prep. A latch that will not project points to the deadlatch; a night latch function that will not hold points to the cam.
12) I have several 55 Series exit devices to service. What else should I order with the NL cam?
Cams are handed, so count your left hand openings and your right hand openings separately before ordering, and the 050356 covers the left hand ones. If the fault is at the latch rather than in the trim linkage, the cam is not your part. On a double door with no center mullion you may also need a mullion to restore the opening; ZenSupply carries the Falcon 4023 steel mullion for double door exit device applications and the Falcon 525 aluminum mullion stabilizers.
13) Do I need a new cylinder or rim housing when I replace the 55NL cam?
Not usually. The 050356 cam replaces the internal night latch linkage and does not touch the cylinder itself, so an existing rim cylinder that keys correctly stays in place. If the cylinder is the failing part, or you are moving the opening onto small format interchangeable core, that is a separate item; ZenSupply stocks rim housings such as the Arrow 16RCR-27 SFIC rim housing in 6/7-pin for the Arrow 24/25 Series.
14) I have a pair of doors with exit devices and no center post. What do I order alongside device repair parts?
A removable mullion, not a device component. The Falcon 4023 is a steel mullion for double door exit device applications, and the Falcon 525 aluminum mullion stabilizers are the accessory that steadies a mullion in that opening. The Von Duprin 050356 left hand NL cam is an internal 55 Series device part and does nothing for the opening between the two leaves. Order the mullion for the opening and the cam only if the 55 Series device itself needs the night latch repair.
How fast can I get the Von Duprin 50356 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 50356 come with a warranty?
Absolutely. The Von Duprin 50356 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 50356?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Von Duprin 50356 from ZenSupply?
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