Von Duprin 3347A-4ft Concealed...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,157.00
$4,137.17
Von Duprin 3347A-4ft Concealed Vertical Rod Exit Device 4 ft Smooth Case Narrow Stile Grade 1

Von Duprin 3347A-4ft Concealed Vertical Rod Exit Device 4 ft Smooth Case Narrow Stile Grade 1

(No reviews yet) Write a Review

Model: 3347AEO 4 US26
$4,157.00
$4,137.17
Selected Finish is
Selected Trim Function is
Selected Lever (For “L” Lever Trims Only) is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$4,157.00
$4,137.17
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Von Duprin 3347A-4ft Concealed Vertical Rod Exit Device 4 ft Smooth Case Narrow Stile Grade 1

Heavy-Duty Narrow Stile Concealed Vertical Rod Solution for Commercial and Institutional Applications

The Von Duprin 3347A-4ft is a professional-grade, 4-foot smooth case concealed vertical rod exit device engineered for demanding institutional environments including schools, hospitals, and government buildings. Designed to fit door stiles as narrow as 2-1/8" (44 mm) for metal doors and as narrow as 4" (102 mm) for wood door stiles, this narrow stile device delivers reliable panic exit performance across all types of single and double doors. Certified to ANSI/BHMA A156.3 2014 Grade 1 standards and UL listed for panic exit hardware, the 3347A-4ft features a one-piece center case cover and a non-handed design for versatile installation flexibility.

Professional Features & Benefits

  • Narrow Stile Compatibility: Fits door stiles as narrow as 2-1/8" (44 mm) for metal doors and 4" (102 mm) for wood door stiles, accommodating a wide range of commercial door configurations.
  • Concealed Vertical Rod Design (47 Series): Features a 5/8" bottom bolt concealed vertical rod mechanism, maintaining a clean architectural appearance while delivering dependable latching performance.
  • ANSI/BHMA Grade 1 Certified: Certified to ANSI/BHMA A156.3 2014 Grade 1, the highest industry standard, ensuring long-term reliability in high-traffic institutional applications.
  • Comprehensive Certifications: Meets ANSI/UL 10C (fire-rated configurations), ANSI/UL 305, CAN/ULC-S104 (fire-rated configurations), and CAN/ULC-S132 for broad code compliance.
  • Non-Handed Configuration: Non-handed design simplifies specification and installation across a variety of door applications, except when the SS (signal switch) option is selected.
  • Hex Key Dogging: Equipped with hex key dogging for convenient hold-open functionality in appropriate applications.
  • Field-Configurable Options: A variety of field-configurable options and retrofit kits are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit and LX latchbolt monitoring) for access control integration.
  • ADA and Delayed Egress Upgrades Available: AX option certified to meet 5 lb. force requirements per 2010 ADA (Chapters 404.2.7 and 30934) and 2013 California Building Code (Chapter 11B-309.4); CX CHEXIT option meets NFPA and IBC requirements for 15-second delayed egress.
  • Broad Trim and Function Compatibility: Compatible with 360 lever/thumbpiece trim (Classroom, Passage, Dummy functions), 386 pull trim (Storeroom, Dummy), and 388 optional pull trim (Storeroom), providing extensive configuration flexibility.

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
  • Subcategory: Concealed Vertical Rod Exit Devices
  • Latch Throw: 3/4"
  • Product Type: Exit Devices - Concealed Vertical Rod
  • Commercial/Residential: Commercial
  • Device Centerline from Finished Floor: 39-13/16"
  • Stile Type: Narrow Stile
  • MAP Policy: Yes
  • 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

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

Delayed Egress Compliance

The Von Duprin 3347A-4ft supports the optional CX CHEXIT upgrade, which meets NFPA and IBC requirements for delayed egress applications. This configuration keeps doors secure for 15 seconds after a request to exit while a nuisance alarm sounds, providing code-compliant delayed egress control for facilities requiring enhanced security at exit points.

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are engineered to the highest industry standards, with the 3347A-4ft certified to ANSI/BHMA A156.3 2014 Grade 1 and listed under ANSI/UL 305 for dependable panic exit performance. The 33A/35A Series has been purpose-built for high-use and high-abuse institutional environments including schools, hospitals, and government facilities, with a breadth of field-configurable options and retrofit kits to keep pace with evolving technology. When reliable, code-compliant egress performance is essential, Von Duprin delivers the professional-grade quality that commercial and institutional applications demand.

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
Subcategory:
Concealed Vertical Rod Exit Devices
Latch Throw:
3/4"
Product Type:
Exit Devices - Concealed Vertical Rod
Commercial/Residential:
Commercial
Device Centerline from Finished Floor:
39-13/16"
Stile Type:
Narrow Stile
MAP Policy:
Yes
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 3347AEO 4 US26 – Frequently Asked Questions

1) Will the Von Duprin 3347A concealed vertical rod device fit a narrow aluminum storefront stile?
Yes. The 3347A fits metal door stiles as narrow as 2-1/8 inches (44 mm). On wood doors it needs at least a 4 inch (102 mm) stile, so a narrow wood stile is out. Door thickness has to be 1-3/4 inches; it is a single-thickness device, not a range.
2) Can a concealed vertical rod exit device secure a pair of doors without a mullion?
Yes, and that is the main reason to pick one. A vertical rod device latches at the head and at the threshold rather than into a strike on the jamb, so a pair of doors can be secured with no center mullion and a clear opening between them. The 3347A runs those rods inside the door, with a 5/8 inch bottom bolt, so nothing is exposed on the door face. A rim device on the same pair would need a removable mullion to latch into. Trade off: concealed rods have to be prepped into the door, so they suit new or factory-prepped doors better than a field retrofit.
3) Do I have to specify handing on the Von Duprin 3347A?
The device itself is non-handed, so the chassis works either way. But handing is still a required selection when ordering, RHR or LHR, because trim and switch options follow the hand. The one case where the device is genuinely handed is the SS signal switch option. Standing at the outside of the door, if the hinges are on your right it is right hand reverse.
4) How do I get the 3347A to work with my access control system?
Two paths. For remote unlocking, order EL electric latch retraction or QEL quiet electric latch retraction, which pull the latches back on a signal from the card reader, or PN pneumatic. For monitoring only, add a switch: RX request to exit, LX latchbolt monitor, LX-RX for both, RX2 for a double RX, or WP-RX where the opening gets wet. Alarm kits are ALK, RX-ALK, and LXRX-ALK. Switches and latch retraction are separate selections, so you can take one, both, or neither.
5) Which trim function do I order for a classroom door that stays locked from outside but always exits?
Order an L lever trim function. The 3347A takes 360 lever and thumbpiece trim in Classroom, Passage, or Dummy, plus 386 pull trim in Storeroom or Dummy and 388 pull in Storeroom. If the outside should never open without a key, NL night latch or NL-OP night latch with optional pull is the choice. EO exit only puts nothing on the outside at all. Thumbturn variants (T, TL, and the blank escutcheon versions) cover openings where staff toggle outside access by hand. Egress from the inside is always free on a panic device regardless of which trim you pick.
6) Does the Von Duprin 3347A meet ADA opening force requirements?
Only if you order the AX accessible option, which is certified to the 5 lb force requirement under the 2010 ADA (Chapters 404.2.7 and 30934) and the 2013 California Building Code (Chapter 11B-309.4). AX is a required yes or no selection on the order, so decide it up front, and specify it on any opening on an accessible route.
7) The opening needs a fire rated concealed vertical rod device - what should be used instead of the Von Duprin 3347A-4ft?
The 3347A-4ft carries a fire rating value of No, so a labeled opening needs a different device. The fire rated concealed vertical rod peers are the Adams Rite 3600 Series and the Adams Rite 3900 Series, both Grade 1 and both fire rated, with the 3900 Series carrying a 1-1/2 hour rating, and the Sargent 12-MD8613, a Grade 1 fire rated device in classroom function. All three are wide stile devices, so the door has to have the stile to take them - they are not a drop-in for a 2-1/8 inch aluminum stile.
8) What is the closest narrow stile concealed vertical rod equivalent to the Von Duprin 3347A-4ft from another manufacturer?
The Von Duprin 3347A-4ft is a Grade 1 concealed vertical rod exit device with a push pad, built for narrow stile doors at 1-3/4 inch thickness. The closest peers on those same points are the Corbin Russwin ED4800, a Grade 1 narrow stile concealed vertical rod device for 1-3/4 inch doors, and the DORMA 9600BB, a Grade 1 narrow stile concealed vertical rod pushpad device covering 1-3/4 inch to 2-1/4 inch doors. Falcon's 24-C Series is also Grade 1 narrow stile concealed vertical rod for 1-3/4 inch doors. The 3347A-4ft differs from all three in the breadth of trim functions it is ordered in, from EO exit only through L lever, NL night latch and T thumbturn.
9) Can a Falcon 1491DT be used in place of a Von Duprin 3347A-4ft?
No - the Falcon 1491DT is a dummy function device with a 9970 pull at 42 inches, Grade 1 narrow stile for 1-3/4 inch doors. Dummy trim does not latch or provide panic egress, so it belongs on the inactive leaf of a pair. The 3347A-4ft is a working panic device with a 3/4 inch latch throw and hex key dogging. If a dummy leaf is what is wanted, the 3347A-4ft is also ordered in DT dummy trim and L-DT lever with dummy trim.
10) The doors are 2-1/4 inch thick - will a Von Duprin 3347A-4ft work, or is there another concealed vertical rod device?
The 3347A-4ft is specified for a 1-3/4 inch door thickness. For a thicker leaf the concealed vertical rod peers that cover 1-3/4 inch to 2-1/4 inch are the DORMA 9600BB, a Grade 1 heavy duty narrow stile pushpad device, and the DORMA 9100 Series, the Grade 1 heavy duty wide stile pushpad version. Both carry a fire rating of No, so they suit the same non-labeled openings the 3347A-4ft does.
11) Will the 3347A latch into the strikes already prepped on my opening?
Latch throw on the 3347A is 3/4 inch, top and bottom. If your existing head and floor strikes were cut for another concealed vertical rod device, measure the pocket depth against that 3/4 inch before you commit, and confirm the rod entry points line up with a 39-13/16 inch device centerline. Concealed rod preps are not interchangeable between manufacturers the way rim strikes often are.
12) What is the difference between hex key dogging, cylinder dogging, and less dogging on an exit device?
Hex dogging is the default on the 3347A: staff hold the pad down with an Allen wrench so the door pushes free during business hours. CD cylinder dogging swaps that for a keyed cylinder, which is what you want when you do not want an Allen key floating around a school or a tenant space. LD less dogging means no dogging at all, which is what you specify when policy or the AHJ requires the latch to stay projected at all times. Pick one when you order, it is a required choice.
13) What is the less bottom rod option and when should I order it?
Less bottom rod deletes the bottom rod and floor strike so the device latches at the head only. Specify it where the floor takes abuse or debris, on exterior doors with poor drainage, or where a floor strike is a trip and cleaning problem, which is why you see it on schools and healthcare corridors. On the 3347A it pairs with the ES top pullman latch for electric strike applications, an option that exists only on less bottom rod builds. If you keep both rods, the PL top and PL bottom pullman latches are the alternative.
14) I need a 15 second delayed egress exit device for a hospital or memory care exit. Does the 3347A do that?
Yes, with the CX CHEXIT option. It holds the door 15 seconds after a request to exit while a nuisance alarm sounds, and meets NFPA and IBC delayed egress requirements. That is the configuration for wander management and asset protection at an exit door, and it has to be specified on the order, not added later.
15) Do I need to order fasteners separately for the Von Duprin 3347A?
No. Both 1-3/4 inch and 2-1/4 inch wood and metal door fasteners ship with the device, and SNB (sex nut and bolt) fasteners are included, which is what you use to through-bolt the device on a door that needs it. What is not in the box is the trim, the outside cylinder if your trim function needs one, and any electrified power supply for EL or QEL builds.
16) My doors are wide stile hollow metal. Should I still buy the narrow stile 3347A?
You can, since a narrow stile device mounts on a wider stile without trouble, but you may prefer a device built for the wider rail. The DORMA 9100 Series is a Grade 1 wide stile concealed vertical rod pushpad for 1-3/4 to 2-1/4 inch doors, which also covers you if your doors are thicker than 1-3/4 inches, where the 3347A will not work at all. Corbin Russwin ED5800 is a Grade 1 wide stile version for 1-3/4 inch doors, and Adams Rite 8500 is a wide stile option for hollow metal.
17) Is the Von Duprin 3347A tough enough for a school or hospital corridor that gets hammered all day?
It is certified to ANSI/BHMA A156.3 2014 Grade 1, which is the highest of the three exit device grades and the one written for high-use commercial openings. It is also UL listed for panic exit hardware under ANSI/UL 305 and CAN/ULC-S132. Grade 1 is the level facility specs normally call for in schools, hospitals, and government buildings, so it will meet a standardizing spec that says Grade 1 panic hardware.
18) Is there a simpler exit only concealed vertical rod device than the Von Duprin 3347A-4ft when no outside trim is needed?
Yes. The 3347A-4ft is ordered with a trim function that includes EO exit only, but if the opening will never take outside trim there are dedicated exit only peers. The Falcon 1690EO is a Grade 1 narrow stile exit only device at 3 ft for 1-3/4 inch doors, the Falcon 1990EO is the same idea at 44 inches, and the Falcon 24-C Series covers a 36 inch narrow stile exit only opening. The BEST Precision 2601 Series is a narrow stile, non-handed exit only device. Note the 3347A-4ft is itself non-handed, so a non-handed exit only peer matches that behavior.
19) What is the difference between the Von Duprin 3347A-4ft and the Corbin Russwin ED7800?
Both are Grade 1 narrow stile concealed vertical rod devices for 1-3/4 inch doors, but the actuator differs. The ED7800 is a crossbar device and is exit only accepting operator trim. The 3347A-4ft is a push pad device, non-handed, with hex key dogging and a device centerline of 39-13/16 inches from the finished floor. If the building standard is crossbar the ED7800 matches it; if the standard is push pad the 3347A-4ft does.
20) Which concealed vertical rod exit device should be used on an aluminum storefront door instead of the Von Duprin 3347A-4ft?
The 3347A-4ft fits metal door stiles as narrow as 2-1/8 inch, which covers most aluminum storefront stiles. The peer written specifically for aluminum doors is the Adams Rite 8600 Series, a Grade 1 narrow stile concealed vertical rod device with a fire rating of No. The CRL Jackson 1285 push pad concealed vertical rod is another storefront option, listed for narrow, medium or wide stile and exit only. The 3347A-4ft differs from both in that it is ordered with lever, night latch and thumbturn trim functions rather than exit only alone.
21) Is the CRL Jackson 1085 a substitute for the Von Duprin 3347A-4ft on a 48 inch door?
They share a 48 inch size - the 3347A-4ft is a 48 inch device and the CRL Jackson 1085 is a 48 inch non-handed concealed vertical rod panic device - but they are not interchangeable on the same leaf. The 1085 is a wide stile, exit only device. The 3347A-4ft is narrow stile and is ordered in lever, night latch, thumbturn and dummy trim functions as well as exit only. On a narrow stile leaf, or where outside trim is required, the 1085 will not serve.
22) Which concealed vertical rod exit device comes in a classroom function like a Von Duprin 3347A-4ft with lever trim?
The Sargent 12-MD8613 is a Grade 1 concealed vertical rod device supplied in classroom function, fire rated, on a wide stile. The Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod device for metal doors at 36 inches by 84 inches with hex dogging and lever trim. The 3347A-4ft reaches classroom function through its 360 lever trim and is ordered in L lever and L-BE lever with blank escutcheon trim functions, with hex key dogging as its standard dogging configuration.
23) For a wood door, is the Von Duprin 3347A-4ft or the BEST Precision 2701 the right concealed vertical rod device?
Both can serve a wood leaf but they land on different stiles. The 3347A-4ft is a narrow stile device that fits wood door stiles as narrow as 4 inches and includes 1-3/4 inch and 2-1/4 inch wood and metal door fasteners with SNB. The BEST Precision 2701 Series is a wide stile concealed vertical rod device described as reversible for wood doors. On a wide rail wood door the 2701 is the match; where the wood stile is close to 4 inches the 3347A-4ft is the one that fits.
24) What finishes does the Von Duprin 3347A come in to match the rest of my doors?
Ten finishes: 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. For matching aluminum storefront the usual picks are 628 aluminum or 710 dark bronze anodized; for institutional corridors 626 satin chrome is the common standard. Those are BHMA finish codes, so the number on your existing hardware is what to match against.
25) Can I get a matching inactive or dummy door to pair with the 3347A on a double opening?
Yes. Order DT dummy trim or L-DT lever with dummy trim for the inactive leaf so the pair reads the same across both doors, with the same case and finish. If you want the second leaf to match visually but sit on a different brand of device, the Falcon 1491DT is a narrow stile dummy trim concealed vertical rod for 1-3/4 inch doors.
How fast can I get the Von Duprin 3347AEO 4 US26 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 3347AEO 4 US26 come with a warranty?
Absolutely. The Von Duprin 3347AEO 4 US26 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 3347AEO 4 US26?
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 3347AEO 4 US26 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.
!