You may also like
Von Duprin 3348A/3548A-3 Concealed Vertical Rod Exit Device - Narrow Stile, 3-Foot, Grade 1
Model: VON-3348A/3548A-3
Von Duprin 3348A/3548A-3 Concealed Vertical Rod Exit Device - Narrow Stile, 3-Foot, Grade 1Heavy-Duty Concealed Vertical Rod Solution for Hollow Metal Single and Double DoorsThe Von Duprin...
Von Duprin
Starting at
$4,054.00
$3,115.22
Von Duprin 3548A-3ft Concealed Vertical Rod Exit Device for Wood Doors, Narrow Stile, 36" Smooth Case
Model: VON-3548A-3ft
Von Duprin 3548A-3ft Concealed Vertical Rod Exit Device for Wood Doors, Narrow Stile, 36" Smooth CaseHeavy-Duty Narrow Stile Concealed Vertical Rod Exit Device for Institutional and Commercial...
Von Duprin
Starting at
$4,272.53
Von Duprin 3547A-4ft Concealed Vertical Rod Exit Device - 4 ft Grooved Case Narrow Stile, Grade 1
Model: VON-3547A-4ft
Von Duprin 3547A-4ft Concealed Vertical Rod Exit Device - 4 ft Grooved Case Narrow Stile, Grade 1Heavy-Duty Narrow Stile Concealed Vertical Rod Solution for Institutional and Commercial...
Von Duprin
Starting at
$4,094.58
Von Duprin 3347A-4ft Concealed Vertical Rod Exit Device 4 ft Smooth Case Narrow Stile Grade 1
Model: VON-3347A-4ft
Von Duprin 3347A-4ft Concealed Vertical Rod Exit Device 4 ft Smooth Case Narrow Stile Grade 1Heavy-Duty Narrow Stile Concealed Vertical Rod Solution for Commercial and Institutional ApplicationsThe...
Von Duprin
Starting at
$4,157.00
$4,137.17
Von Duprin 5547-3ft Narrow Stile Concealed Vertical Rod Exit Device, 36" Grade 1 Crossbar
Model: VON-5547-3ft
Von Duprin 5547-3ft Narrow Stile Concealed Vertical Rod Exit Device, 36" Grade 1 CrossbarCommercial-Grade Concealed Vertical Rod Exit Device for Narrow Stile Metal DoorsThe Von Duprin 5547-3ft is a...
Von Duprin
Starting at
$5,067.00
$1,704.50
Von Duprin 3348A/3548A-4 Concealed Vertical Rod Exit Device - 4-Foot Narrow Stile, Grade 1
Heavy-Duty Concealed Vertical Rod Panic Hardware for Hollow Metal Single and Double Doors
The Von Duprin 3348A/3548A-4 is a 4-foot concealed vertical rod exit device engineered for hollow metal single and double doors in demanding institutional environments. Certified to ANSI/BHMA A156.3 2014 Grade 1 and UL listed for panic exit hardware, this device fits door stiles as narrow as 2-1/8" (44 mm) and accommodates a door thickness of 1-3/4". The 3548A features a smooth mechanism case while the 3348A features a grooved mechanism case, and both share a newly designed one-piece center case cover. The device is non-handed except when the SS (Signal Switch) option is used, offering flexible installation across a wide range of openings.
Professional Features & Benefits
- Narrow Stile Compatibility: Fits door stiles as narrow as 2-1/8" (44 mm), making it ideal for narrow stile hollow metal single and double door applications.
- ANSI/BHMA Grade 1 Certified: Certified to ANSI/BHMA A156.3 2014 Grade 1 and UL listed under ANSI/UL 10C (fire-rated configurations) and ANSI/UL 305, ensuring compliance with the highest industry standards.
- Concealed Vertical Rod Design with 1-1/2" Latch Throw: The 48-series concealed vertical rod mechanism features a 1-1/2" bottom bolt latch throw for secure, reliable door latching in high-traffic applications.
- Non-Handed Configuration: The device is non-handed (except when the SS Signal Switch option is used), simplifying specification and reducing inventory requirements for installers.
- Field-Configurable Options: A broad range of field-configurable options and retrofit kits are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (Request to Exit RX and Latchbolt Monitoring LX) for access control integration.
- ADA-Accessible Option: The AX upgrade option is certified to meet the 5 lb. force requirements of the 2010 Americans with Disabilities Act (ADA) Chapters 404.2.7 and 30934, and the 2013 California Building Code Chapter 11B-309.4.
- Delayed Egress Option: The CX (CHEXIT) upgrade meets NFPA and IBC requirements for delayed egress, securing doors for 15 seconds after a request to exit while a nuisance alarm sounds.
- Hex Key Dogging: Equipped with hex key dogging for convenient hold-open functionality in appropriate applications.
- Versatile Trim and Function Options: Compatible with 360 lever/thumbpiece trim (Classroom, Passage, Dummy functions), 386 pull trim (Storeroom, Dummy), and 388 optional pull trim (Storeroom), as well as EO, DT, NL, NL-OP, L, L-BE, TL, TL-BE, T, and T-BE product functions.
Technical Specifications
- Product Group: Exit Devices and Trim
- Series: 33 & 35 Series
- Grade: Grade 1
- Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
- Product Subgroup: Exit Devices - Vertical Rod
- Product Type: Exit Devices - Concealed Vertical Rod
- Subcategory: Concealed Vertical Rod Exit Devices
- Latch Throw: 1-1/2"
- Commercial/Residential: Commercial
- Device Centerline from Finished Floor: 39-13/16"
- Stile Type: Narrow Stile
- MAP Policy: Yes
- Product Model: 3348A/3548A-4'
- Product Function: EO, DT, NL, NL-OP, L, L-BE, TL, TL-BE, T, T-BE
- Door Hand Direction: Non-Handed
- Door Thickness Range: 1-3/4"
- Product Size: 48"
- Dogging Configuration: Hex Key Dogging
- Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
- Fire Rating: No
- Product Projection: 3-13/16"
- Product Style: Push Pads
- Product Category: Exit Devices and Trim
- Department: Door Hardware
Professional Applications
- Schools and Educational Facilities
- Hospitals and Healthcare Institutions
- Government and Municipal Buildings
- Commercial Office Buildings
- Retail Establishments
- Industrial and Warehouse Facilities
- Multi-Tenant Residential Properties
Why Choose Von Duprin Quality?
Von Duprin concealed vertical rod exit devices are built to the highest industry standards, certified to ANSI/BHMA A156.3 2014 Grade 1 and listed under ANSI/UL 305 and ANSI/UL 10C for fire-rated configurations. The 3348A/3548A-4 is specifically designed for high-use and high-abuse institutional applications such as schools, hospitals, and government facilities, with a broad range of field-configurable retrofit options to keep pace with evolving technology. Engineered for demanding commercial applications where dependable panic hardware performance is essential.
Manufacturer Resources
Von Duprin 88 Series Catalog
Product Specs
- Product Group:
- Exit Devices and Trim
- Series:
- 33/35 Series
- Grade:
- Grade 1
- Fasteners:
- Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
- Product Subgroup:
- Exit Devices - Vertical Rod
- Product Type:
- Exit Devices - Concealed Vertical Rod
- Subcategory:
- Concealed Vertical Rod Exit Devices
- Latch Throw:
- 1-1/2"
- Commercial/Residential:
- Commercial
- Device Centerline from Finished Floor:
- 39-13/16"
- Stile Type:
- Narrow Stile
- MAP Policy:
- Yes
- Product Model:
- 3348A/3548A-4'
- Product Function:
- EO, DT, NL, NL-OP, L, L-BE, TL, TL-BE, T, T-BE
- Door Hand Direction:
- Non-Handed
- Door Thickness Range:
- 1-3/4"
- Product Size:
- 48"
- Dogging Configuration:
- Hex Key Dogging
- Product Dimension:
- 8-3/16" x 1-9/16" x 2-13/32"
- Fire Rating:
- No
- Product Projection:
- 3-13/16"
- Product Style:
- Push Pads
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Von Duprin VON-3348A-4-626 – Frequently Asked Questions
1) Will the Von Duprin 3348A/3548A-4 fit a narrow stile hollow metal door?
Narrow stile is exactly what the 3348A/3548A is built for. It mounts on stiles as narrow as 2-1/8 inches (44 mm) and the mechanism case measures 8-3/16 x 1-9/16 x 2-13/32 inches, so it sits on stiles too slim for a wide stile device. Door thickness has to be 1-3/4 inches, and the -4 size is a 48 inch device for doors up to 4 feet wide. If your openings are wide stile hollow metal, look at a wide stile concealed vertical rod instead, such as the Corbin Russwin ED5800.
2) Do I have to order a left hand or right hand version of the Von Duprin 3348A?
The device is non-handed, so one part covers both hands of door. The single exception is the SS signal switch option, which is handed. Trim can be handed separately: the 386NL night latch is ordered as Right Hand Reverse or Left Hand Reverse, while the 360L lever is field reversible, so you set the lever hand on site.
3) Will a concealed vertical rod exit device latch a pair of doors without a mullion?
Yes, and that is the main reason to choose concealed vertical rod over a rim device. The rods run inside the door and throw a bolt into the head frame and down into the threshold, so each leaf latches on its own and no center mullion is required. The bottom bolt on the 48-series mechanism throws 1-1/2 inches. A rim device would need a removable mullion between the leaves; the concealed rod also hides all the hardware inside the door, unlike a surface vertical rod.
4) What trim do I order with the Von Duprin 3348A/3548A and what do the function codes mean?
Trim function is a required choice. EO is exit only with no outside trim. NL is night latch with the 386 pull, ordered RHR or LHR. NL-OP adds the optional 388 pull. L and L-BE are 360 lever trim, blank escutcheon on the BE version, and the lever is field reversible; lever style choices are 06 (default), 03, 07, 17, and the Latitude LAT. TL and TL-BE are turn lever using 376T with the 386. T and T-BE are 360 thumbturn. DT is dummy trim on the 386, L-DT the lever dummy. Mounting fasteners come in the box: 1-3/4 inch and 2-1/4 inch wood/metal door screws with SNB.
5) The 3348A/3548A-4 is not fire rated. What concealed vertical rod device should I use on a fire rated opening instead?
For a labeled opening, go to a device carried as fire rated. The Adams Rite 3600 Series is a Grade 1 fire rated concealed vertical rod exit device for hollow metal doors, and the Adams Rite 3900 Series is a Grade 1 fire rated concealed vertical rod device with a 1-1/2 hour rating. On the Sargent side, the 12-MD8613 is a Grade 1 fire rated concealed vertical rod device in classroom function. Both Adams Rite series are wide stile, so confirm the stile on the door before ordering, since the 3348A/3548A-4 is a narrow stile device and carries no fire rating.
6) My door has a wide stile, not narrow. What takes the place of the 3348A/3548A-4?
The 3348A/3548A-4 is a narrow stile device, so on a wide stile door look to the Corbin Russwin ED5800, a Grade 1 concealed vertical rod exit device for wide stile 1-3/4 inch doors offered exit only or accepting trim. The DORMA 9100 Series is another Grade 1 wide stile concealed vertical rod pushpad device, rated heavy duty and covering a 1-3/4 inch to 2-1/4 inch door thickness range, which is the one to look at if the door is thicker than 1-3/4 inch. Neither the ED5800 nor the 9100 is carried as fire rated.
7) Can I hold the door unlatched during business hours with the 3348A exit device?
Hex key dogging is the default, so staff can dog the push pad down with a hex wrench and leave the door on free push. Other dogging choices at order time are CD cylinder dogging (keyed, so you are not handing out hex wrenches), CDSI cylinder dogging with a visual indicator, HDSI hex dogging with indicator, and LD less dogging if the site does not want the door held at all. Dogging is a required selection on the order.
8) Can the Von Duprin 3348A/3548A be tied into an access control system?
Yes. Electrical options are ordered with the device: EL electric latch retraction or QEL quiet electric latch retraction to pull the latches under power, RX request to exit switch to signal the access control panel when the pad is pushed, LX latchbolt monitor switch to report bolt position, and ALK alarm exit kit for a local alarm on the door. Latch retraction lets you pair the opening with an auto operator or card reader while the pad still gives free mechanical egress.
9) What is the difference between the Von Duprin 3348A and the 3548A?
Same device, different case appearance. The 3348A has a grooved mechanism case, the 3548A a smooth one, and both use the same one-piece center case cover. Everything else matches: Grade 1, 2-1/8 inch minimum stile, 1-3/4 inch door, 1-1/2 inch bottom bolt throw. Pick the case style that matches the other openings in the building. Ten finishes are offered on either case: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, 626 satin chrome, 628 aluminum, 643E aged bronze, 710 dark bronze anodized, and 711 flat black.
10) How high off the floor does the push bar of a 48 inch Von Duprin exit device sit?
Centerline of the 3348A/3548A device lands at 39-13/16 inches from finished floor. That is the dimension to lay out on the door before you cut, and it is what you check against the drawing when an architect has called the push bar height. Projection off the door face is 3-13/16 inches, which is what matters for clearance in a vestibule or a tight corridor.
11) Can I get delayed egress on a Von Duprin 33/35 Series concealed vertical rod device?
The CX (CHEXIT) upgrade adds delayed egress to the 3348A/3548A. It holds the door secure for 15 seconds after someone pushes the pad, sounding a nuisance alarm during the delay, and it meets NFPA and IBC delayed egress requirements. That is the option for a healthcare unit or a retail back door where you need a hold before the door releases.
12) Does the Adams Rite 8600 Series swap in for a Von Duprin 3348A/3548A-4?
They look close on paper and they are not the same application. The Adams Rite 8600 Series is a Grade 1 narrow stile concealed vertical rod exit device, but it is built for aluminum doors. The Von Duprin 3348A/3548A-4 is a narrow stile concealed vertical rod device for hollow metal single and double doors on 1-3/4 inch thickness. Match the door material before treating one as a stand-in for the other. If the opening is hollow metal and wide stile, the Adams Rite 8500 Series is the Grade 1 concealed vertical rod device built for hollow metal doors.
13) I only need exit only panic hardware on a 4-foot door. Is there a simpler option than the 3348A/3548A-4?
Yes. The 3348A/3548A-4 is built to take a full trim range including 360 lever, 386 pull and thumbturn trims, which is more device than an opening that only needs free egress. The Falcon 1990EO is a Grade 1 narrow stile concealed vertical rod exit device supplied exit only for a 44 inch door on 1-3/4 inch thickness. The CRL Jackson 1085 Series is a 48 inch non-handed concealed vertical rod panic device in exit only function, though it is a wide stile device. The BEST Precision 2601 Series is also a narrow stile, non-handed concealed vertical rod device in exit only form.
14) Is the Falcon 1491DT a substitute for the 3348A/3548A-4 on an active leaf?
No. The Falcon 1491DT is a Grade 1 narrow stile concealed vertical rod device in dummy function, supplied with a 9970 pull at 42 inches, so it is the inactive or pull side half of a pair and does not latch or provide egress on its own. The Von Duprin 3348A/3548A-4 carries the working functions, from EO and NL through the lever and thumbturn trims, and is the device for the leaf that has to open. Use the 1491DT only where a matching non-functioning face is wanted.
15) What concealed vertical rod device works on a wood door if the 3348A/3548A-4 is specified for hollow metal?
The Von Duprin 3348A/3548A-4 is engineered for hollow metal single and double doors. For wood, the BEST Precision 2701 Series is a wide stile concealed vertical rod exit device built reversible for wood doors. The BEST Precision 2801 Series is another wide stile concealed vertical rod device to look at when the stile allows it. Both are a stile change from the narrow stile Von Duprin, so verify the lock stile width on the wood leaf.
16) I have a mix of narrow, medium and wide stile doors. Is there one concealed vertical rod device that covers all of them?
The CRL Jackson 1285 push pad concealed vertical rod panic exit is carried for narrow, medium or wide stile and is supplied in exit only function, which makes it the one to look at when the door schedule mixes stile widths and every opening is free egress. The Von Duprin 3348A/3548A-4 is a narrow stile device, fitting stiles as narrow as 2-1/8 inch, but it carries the wider function range including night latch, lever and thumbturn trim, so openings that need keyed or lever outside control still want the Von Duprin.
17) I need a classroom function concealed vertical rod device with hex dogging. How does that compare to the 3348A/3548A-4?
The Sargent 12-MD8613 is a Grade 1 fire rated concealed vertical rod exit device supplied in classroom function on a wide stile door, and the Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod device for metal doors at 36 by 84 inches with hex dogging. The Von Duprin 3348A/3548A-4 comes with hex key dogging as standard and takes 360 lever trim in classroom, passage and dummy functions, on a narrow stile 1-3/4 inch hollow metal door at 48 inches. The deciding factors are stile width and whether the opening is labeled.
18) I need a push pad device, not a crossbar. Which concealed vertical rod devices are push pad?
The Von Duprin 3348A/3548A is push pad style, which is what most institutional specs call for today because there is no bar to catch on carts or wheelchairs. Among the alternatives, the CRL Jackson 1285 is a push pad concealed vertical rod and the DORMA 9600BB is a narrow stile push pad device. If a crossbar is what you are matching on existing openings, the Corbin Russwin ED7800 is a narrow stile crossbar concealed vertical rod.
19) What extra options should I add on a school or exterior opening with a Von Duprin 3348A?
Three mechanical add-ons are worth specifying. WH weep holes let water drain out of the bottom rod pocket on an exterior door, which is what keeps the bottom bolt from icing or corroding. SEC security screws deter tampering in a corridor students can reach. GBK glass bead kit is for doors with a glass lite where the bead has to clear the device. On the dogging side, CDSI or HDSI give a visual indicator so staff can see at a glance whether the door is dogged down.
How fast can I get the Von Duprin VON-3348A-4-626 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-3348A-4-626 come with a warranty?
Absolutely. The Von Duprin VON-3348A-4-626 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-3348A-4-626?
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 VON-3348A-4-626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.