Von Duprin 555NL-CA Night Latc...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$519.00
$373.83
Von Duprin 555/5556NL-CA Night Latch Cylinder Assembly Trim Function Wood/Metal Door, Trim for 55 Series Exit Devices

Von Duprin 555NL-CA Night Latch Cylinder Assembly Exit Device Trim for 55 Series, Non-Handed, Wood & Hollow Metal Door

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Model: 555NL-CA 26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$519.00
$373.83
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Von Duprin 555NL-CA Night Latch Cylinder Assembly Exit Device Trim for 55 Series, Non-Handed, Wood & Hollow Metal Door

Professional Night Latch Cylinder Assembly Trim for 55 Series Exit Devices

The Von Duprin 555NL-CA and 556NL-CA Night Latch Cylinder Assembly Trim is a Grade 1, Heavy Duty exit device trim engineered for compatibility with Von Duprin 55 Series Exit Devices. The 555NL-CA model is designed for hollow metal doors, while the 556NL-CA model is designed for wood doors, offering versatile solutions for a wide range of commercial door applications. With a product projection of 2 5/8" x 1 7/8" and a non-handed configuration, this trim integrates seamlessly into narrow stile door assemblies suited for retro-inspired architecture and historical buildings. The 55 Series platform supports field reversible handing and flexible field sizing across several surface-mounted vertical rod and rim applications.

Professional Features & Benefits

  • Dual-Model Versatility: Available as the 555NL-CA for hollow metal doors and the 556NL-CA for wood doors, providing a tailored fit for the most common commercial door constructions.
  • Grade 1 Heavy Duty Performance: Rated Grade 1 and classified as Heavy Duty, delivering the highest level of commercial-grade durability and reliability for demanding, high-traffic environments.
  • Night Latch Cylinder Assembly Function: Provides secure night latch cylinder assembly trim function, enabling controlled after-hours access while maintaining life-safety egress compliance.
  • Non-Handed Design: Non-handed configuration simplifies specification, ordering, and installation, eliminating the need to determine door handing prior to purchase.
  • Precise Product Projection: Features a 2 5/8" x 1 7/8" projection for consistent, professional fitment on compatible 55 Series exit device assemblies.
  • 55 Series Compatibility: Engineered exclusively for Von Duprin 55 Series Exit Devices, a narrow stile platform with field reversible handing and flexible field sizing for surface-mounted vertical rod and rim applications.
  • Universal Center Case Design: The 55 Series universal center case allows users to change or upgrade features on their current device as security needs evolve, protecting long-term investment.
  • Flexible Customization: Several mechanical, electronic, and finish options can be customized to meet the specific needs of any commercial facility.

Technical Specifications

  • Subcategory: Exit Device Trim
  • Series: 55 Exit Trim
  • Grade: Grade 1
  • Duty Level: Heavy Duty
  • Compatibilty: 55 Series Exit Devices
  • Product Group: Exit Devices and Trim
  • Product Subgroup: Exit Device Trim
  • Product Type: Exit Device Trim
  • Commercial/Residential: Commercial
  • Product Model: 555NL-CA, 556NL-CA
  • Product Function: Night Latch Cylinder Assembly
  • Door Hand Direction: Non-Handed
  • Product Projection: 2 5/8" x 1 7/8"
  • 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 trim products are built with robust materials and unique engineering designed to add longevity and value over time. The 55 Series platform's universal center case and flexible design allow security configurations to evolve alongside changing facility needs, ensuring a lasting return on investment. Rated Grade 1 and Heavy Duty, Von Duprin's 555NL-CA and 556NL-CA trim is engineered for demanding commercial applications where dependable performance and life-safety compliance are essential.

Manufacturer Resources

Von Duprin 55 Series Catalog

Product Specs

Subcategory:
Exit Device Trim
Series:
55 Exit Trim
Grade:
Grade 1
Duty Level:
Heavy Duty
Compatibility:
55 Series Exit Devices
Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Device Trim
Product Type:
Exit Device Trims
Commercial/Residential:
Commercial
Product Model:
555NL-CA, 556NL-CA
Product Function:
Night Latch Cylinder Assembly
Door Hand Direction:
Non-Handed
Product Projection:
2 5 /8" x 1 7 /8"
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 555NL-CA 26D – Frequently Asked Questions

1) Will Von Duprin 555NL-CA trim fit an exit device other than a 55 Series?
No. The 555NL-CA and 556NL-CA night latch trim is built for Von Duprin 55 Series exit devices only, and the mounting and cylinder tailpiece arrangement is specific to that platform. If your device is a Von Duprin 98/99, 33A/35A or 22, that is a different trim family and this one won't mount. Confirm the device series stamped on the center case before ordering.
2) What does night latch function mean on exit device trim, and do I still get free egress?
Night latch means the outside trim has a cylinder and no lever or knob: the key retracts the latch to let you in, and with the door secured the outside is pull-only. Egress is unaffected, since the push bar on the inside always releases the device. That's why it suits after-hours entry on a locked storefront or service door. The 555NL-CA/556NL-CA is a night latch cylinder assembly for the Von Duprin 55 Series.
3) We need access control on the exit device - what electrified trim goes in place of the 555NL-CA?
The 555NL-CA is mechanical, keyed night latch operation only. For electrified control, Command Access offers the ET15, ET25 and ET26 electrified exit trims with 12V/24V operation and fail safe or fail secure options, with the ET26 built Grade 1 and field reversible. Command Access also lists the 230L electrified trim for V96/36/23 Series Von Duprin devices. Dormakaba covers the standalone credential route with the E-Plex 201U electronic pushbutton exit trim and the PowerPlex P201U for rim, mortise and SVR devices.
4) I want a lever on the outside instead of a cylinder pull - what replaces the 555NL-CA?
The 555NL-CA is a night latch cylinder assembly trim, so the exterior operation is the key and a pull rather than a lever. If a lever is wanted, night latch lever trims include the Sargent 704ET, a Grade 1 heavy duty night latch lever trim with field reversible operation, the Corbin Russwin VT957ET nightlatch escutcheon trim for ED5000 Series devices, and the Dorma YR03R wide stile escutcheon lever trim in night latch function supplied less cylinder. Each of those follows its own device family, so confirm the exit device series before ordering.
5) Our spec calls for classroom or storeroom function on the exterior trim - is the 555NL-CA correct?
No. The 555NL-CA is a night latch cylinder assembly, not a keyed lever function. For storeroom, Design Hardware KIL Storeroom is a Grade 1 storeroom function trim for 1000 and 2000 Series devices with Schlage C keyway, Marks USA M195F is a storeroom function lever and rose trim for M9900 touchbar devices, and Tell EDELT80 is a storeroom function escutcheon lever trim for doors 1-3/8 to 1-3/4 inches thick. For classroom, Falcon 510L is a heavy duty classroom function lever trim for 24/25 Series devices.
6) My door is wood - do I still use the 555NL-CA?
For a wood door the 556NL-CA is the correct model; the 555NL-CA is the hollow metal version. Both are Grade 1 heavy duty night latch cylinder assembly trim for Von Duprin 55 Series devices, non-handed, with a 2 5/8 inch by 1 7/8 inch projection, and both come in finishes including 626 satin chrome, 613 oil rubbed bronze, 622 matte black and 606 satin brass. Peer trims handle door construction differently - Tell EDELT53, for example, is specified by door thickness range of 1-3/8 to 1-3/4 inches rather than by wood versus metal.
7) Do I need to know the door handing before ordering the Von Duprin 555NL-CA?
No handing to determine. The 555NL-CA night latch trim is non-handed, so one part covers left and right hand openings, and the 55 Series device it mounts to is field reversible. That makes it easy to stock a single trim for a building with doors swinging both ways.
8) Is the Von Duprin 555NL-CA night latch trim heavy duty enough for a school or hospital entrance?
It's rated Grade 1 and classified heavy duty, which is the top commercial durability tier and what you'd spec for high-traffic entrances in schools, hospitals, offices and municipal buildings. It's a commercial-grade product, not a residential one.
9) How far does the Von Duprin 555NL-CA trim stick out from the door face?
Projection is 2 5/8 inches by 1 7/8 inches. That matters where the door swings past a return wall, a stair handrail or an adjacent leaf on a pair, and on narrow stile aluminum-style openings where a bulky escutcheon trim would foul the glass stop.
10) I need lever trim instead of a night latch pull for my exit device. What should I look at?
A night latch cylinder assembly gives you key access and a pull only, so if you want the outside to operate with a handle you need a lever trim instead. Across other brands, the Sargent 704ET is a night latch lever trim with field reversible operation, and the Dormakaba YR03R is a wide stile escutcheon lever trim in night latch function supplied less cylinder. For always-latched keyed lever operation, the Design Hardware KIL storeroom function trim is the storeroom equivalent. Note none of those mount to a Von Duprin 55 Series device, so match the trim to your device family.
11) What other night latch exit trims does ZenSupply carry if I'm not on a Von Duprin device?
Match the trim to your device brand. For Sargent, the 704-ETL is a PE Series nightlatch lever trim with key retract, and the 744 is the 70 Series Grade 1 night latch trim for 8700 and 8900 surface vertical rod and mortise devices. Corbin Russwin's VT957ET is a nightlatch escutcheon trim in stamped or formed stainless for ED5000 Series devices. Accentra offers the 121NL nightlatch trim, and Design Hardware's 2P-03NL pull trim with cylinder hole covers the 1000R and 2000R devices. The Von Duprin 555NL-CA/556NL-CA stays with 55 Series devices.
12) Will the Von Duprin 555NL-CA work on a narrow stile door?
Yes, that's the point of the platform. The 55 Series is a narrow stile exit device line, and the 555NL-CA/556NL-CA night latch trim is sized to suit those assemblies with its 2 5/8 inch x 1 7/8 inch projection. It's commonly used on retro and historic storefront openings. If you're on a wide stile door with a different device family, look at the trim built for that device rather than this one.
13) Is the Accentra 121NL the same thing as the Von Duprin 555NL-CA?
They share the night latch idea but not the fit. The Accentra 121NL is a nightlatch exit device trim on the Accentra platform, while the 555NL-CA is a night latch cylinder assembly trim engineered for Von Duprin 55 Series exit devices with a 2 5/8 inch by 1 7/8 inch projection. Exit trim mounts to the device chassis, so a 121NL will not drive a 55 Series device. Match the trim to the device brand and series already on the opening.
14) We do not want the outside key to retract the latch - what trim should we use instead?
The 555NL-CA is night latch function, meaning the cylinder retracts the latch for after-hours entry. If the outside should never operate the latch, exit only and dummy trims are the alternative: BEST offers the 1701 wide stile exit only pull trim and the 2901 narrow stile exit only lever trim, both for 2000 Series devices, and Detex makes the 02BN dummy S-lever trim with blank escutcheon for Value Series devices. If a plain escutcheon with no through function is wanted on a Falcon device, the 212L is a blank escutcheon lever trim.
15) Is there a simpler keyed pull trim comparable to the 555NL-CA for a back-of-house door?
Pull-style keyed trims are the nearest equivalent in concept. Design Hardware 2P-03NL is a Grade 1 pull trim with a cylinder hole in night latch function for 1000R and 2000R exit devices, Dexter ED1500T-PULL-NC is a Grade 1 nightlatch function trim with a raised lip pull plate, and Tell EDPT is an exit device pull trim with a cylinder hole supplied less cylinder for doors 1-3/8 to 1-3/4 inches thick. The 555NL-CA remains the one to use if the device is a Von Duprin 55 Series, and it is non-handed so handing does not need to be determined up front.
16) What trim should I order if the opening needs free passage from the outside rather than keyed night latch entry?
Passage function trims leave the outside always unlocked, which is the opposite of the 555NL-CA night latch arrangement. Corbin Russwin covers this across its device lines: the 3310AET is passage function for ED300 Series, the x810ET is passage function for ED4000 Series SecureBolt, rim, surface and concealed vertical rod devices, and the x910ET is a heavy-duty passage trim for ED5200S, ED5200, ED5400 and ED5800 Series. Arrow's SRX01 is a passage function Sierra lever trim with rose for ED910, S1150 and S1250 devices.
17) We standardize on heavy duty Grade 1 trim across the campus - which options besides the Von Duprin 555NL-CA meet that?
The 555NL-CA is Grade 1 and heavy duty for commercial use. Other heavy duty Grade 1 trims include the Sargent 704ET and 704-ETL, both night latch function, and the Falcon 510L classroom function trim for 24/25 Series devices, with the 510L-FSA/FSE as its electrified heavy duty counterpart on 25 Series. Pamex E9000 is a Grade 1 storeroom lever trim rated for doors 1-3/8 to 2 inches thick. Since trim is device-specific, standardizing usually means standardizing the exit device series first.
18) Is the Sargent 744 an alternative to the 555NL-CA for a vertical rod door?
Only if the device is Sargent. The 744 is a Grade 1 night latch trim with freewheeling operation where the key retracts the latch, made for Sargent 8700 and 8900 Series surface vertical rod and mortise devices. The 555NL-CA is a night latch cylinder assembly trim for Von Duprin 55 Series devices, a platform that covers surface-mounted vertical rod and rim applications. Both address the same vertical rod scenario, but each mounts only to its own device family.
19) Which finishes does the Von Duprin 555NL-CA night latch trim come in?
Nine finishes, and each is available for both the hollow metal and the wood door version: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 622 matte black, 625 bright chrome, 626 satin chrome, 643E aged bronze, and 693/SPBLK black painted. The bronze and black options are what people reach for on historic and retro storefront work; 626 satin chrome is the usual match for existing commercial openings.
20) If I upgrade the 55 Series device later, do I have to replace the trim too?
Not necessarily. The 55 Series uses a universal center case, so features on an installed device can be changed or upgraded as security needs shift, and the platform covers surface vertical rod and rim applications with field sizing. That means a facility can standardize on the 555NL-CA or 556NL-CA night latch trim across openings and change the device configuration underneath it.
How fast can I get the Von Duprin 555NL-CA 26D 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 555NL-CA 26D come with a warranty?
Absolutely. The Von Duprin 555NL-CA 26D 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 555NL-CA 26D?
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
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