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Von Duprin 379L Key Locks and Unlocks Control Trim for 55 Series Rim Exit Devices
370 Series Heavy-Duty Commercial Exit Device Trim with Mortise Cylinder Function
The Von Duprin 379L is a Grade 1 heavy-duty exit device control trim from the 370 Series, engineered specifically for use with Von Duprin 55 Series rim exit devices. Featuring a key locks and unlocks function with a mortise cylinder, this trim delivers reliable access control in demanding commercial environments. Certified to ANSI/BHMA A156.3 2014 Grade 1 standards, the 379L is built to meet the rigorous performance requirements of high-traffic facilities while offering the modular flexibility that Von Duprin is known for.
Professional Features & Benefits
- Key Locks and Unlocks Function: Mortise cylinder operation provides secure, keyed control over exit device locking and unlocking, ideal for controlled-access commercial openings.
- ANSI/BHMA A156.3 2014 Grade 1 Certified: Meets the highest commercial grade standard for exit device trim, ensuring long-term durability and code compliance in heavy-duty applications.
- Fire-Rated Compliance: Certified to ANSI/UL 10C and CAN/ULC-S104 (fire-rated configurations), supporting installation on fire-rated door assemblies where required.
- Additional Code Certifications: Also listed to ANSI/UL 305 and CAN/ULC-S132, providing broad compliance coverage across North American building and life safety codes.
- Modular 370 Series Design: Part of Von Duprin's 370 Series Control Trims, engineered for compatibility with the 55 Series exit device platform and designed to accept new options as they are developed.
- Investment Protection: Von Duprin's flexible, modular architecture allows facilities to upgrade and add functionality to existing devices cost-effectively as mechanical and electronic technology needs evolve.
- Heavy-Duty Commercial Grade: Rated for heavy-duty use in commercial applications, delivering consistent performance in high-traffic openings such as offices, schools, and institutional facilities.
- Wide Lever and Finish Availability: Compatible with a wide variety of levers and finishes available within the 55 Series platform, enabling aesthetic coordination across a facility.
Technical Specifications
- Subcategory: Exit Device Trim
- Series: 370 Series
- Grade: Grade 1
- Duty Level: Heavy Duty
- Function Description: Key Locks and Unlocks
- Product Group: Exit Devices and Trim
- Product Subgroup: Exit Device Trim
- Product Type: Exit Device Trim
- Commercial/Residential: Commercial
- Cylinder and Keyways: Mortise Cylinder
- Product Model: 379L
- Door Hand Direction: Yes
- 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 370 Series exit device trim products are certified to ANSI/BHMA A156.3 2014 Grade 1 standards and carry fire-rated listings including ANSI/UL 10C and CAN/ULC-S104, reflecting a commitment to code-compliant, heavy-duty performance. The modular design philosophy ensures that facilities can adapt and expand their door hardware capabilities over time without replacing entire systems. Engineered for demanding commercial applications, the Von Duprin 379L delivers the dependable, investment-protecting performance that security professionals rely on.
Manufacturer Resources
Von Duprin 55 Series Catalog
Product Specs
- Subcategory:
- Exit Device Trim
- Series:
- 370 Series
- Grade:
- Grade 1
- Duty Level:
- Heavy Duty
- Function Description:
- Key Locks and Unlocks
- Product Group:
- Exit Devices and Trim
- Product Subgroup:
- Exit Device Trim
- Product Type:
- Exit Device Trims
- Commercial/Residential:
- Commercial
- Cylinder and Keyways:
- Mortise Cylinder
- Product Model:
- 379L
- Door Hand Direction:
- Yes
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Von Duprin VON-379L-626 – Frequently Asked Questions
1) What is the Von Duprin 379L Key Unlocks Trim used for?
The 379L is a key unlocks trim for Von Duprin 55 series rim exit devices. It allows key unlocking from the outside while maintaining free egress from the inside. The trim mounts on the outside of the door.
2) Which Von Duprin exit devices is this trim compatible with?
This trim is specifically designed for Von Duprin 55 series rim exit devices. It will not work with other series like 33, 88, or 99. Verify your exit device model before ordering.
3) Does this trim come with the cylinder and keys?
The 379L trim typically does not include the cylinder or keys. You need to order a compatible cylinder separately. Most standard mortise cylinders will work with proper threading.
4) What door handing options are available?
The 379L trim is available for both left-hand and right-hand doors. Specify the handing when ordering. Handing is determined by standing on the outside of the door looking at the hinges.
5) What finishes are available for this trim?
Common finishes include aluminum, dark bronze, and stainless steel. The finish should match your exit device and door hardware. Confirm available finishes when ordering as options may vary.
6) Can this trim be used on fire-rated doors?
Yes, when properly installed with a fire-rated Von Duprin 55 series exit device, this trim maintains the fire rating. Follow manufacturer installation instructions and local fire codes.
7) What tools are needed for installation?
Installation typically requires a drill, appropriate drill bits, screwdriver, and measuring tools. Follow the manufacturer's template for precise hole placement. Some door preparation may be needed.
8) How do you adjust the trim after installation?
The 379L trim has limited adjustment capability. Proper installation using the manufacturer's template is critical. If adjustment is needed, check mounting screws and verify door alignment first.
9) What are common installation issues to avoid?
Common issues include incorrect hole placement, wrong handing, and cylinder binding. Always use the manufacturer's template and verify measurements twice before drilling. Check door thickness requirements.
10) Are there alternative trim options for the 55 series?
Yes, Von Duprin offers other trim options for 55 series devices including lever trims and different cylinder types. The 379L is specifically for key unlocks function without lever operation.
11) What door thickness range does this trim accommodate?
Standard door thickness compatibility varies by trim configuration. Check manufacturer specifications for your specific installation. Most commercial doors from 1-3/4" to 2-1/4" thick are typically supported.
12) How does the key unlocks function work?
The key unlocks trim allows a key to retract the exit device latchbolt from outside. Inside egress remains free at all times by pressing the pushbar. This provides controlled access while maintaining emergency exit capability.
How fast can I get the Von Duprin VON-379L-626 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 VON-379L-626 come with a warranty?
Absolutely. The Von Duprin VON-379L-626 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 VON-379L-626?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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installation tips, and troubleshooting. Contact Us
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ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
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rewards on
every order.
Our team is always ready to help you choose the right product for your project.