Von Duprin 3347AF-4ft Fire Rat...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$4,319.83
Copy of Von Duprin 3347A-F Series - Fire Rated 3 ft Grooved Case Narrow Stile Concealed Vertical Rod Exit Device, Less Dogging

Von Duprin 3347AF-4ft Fire Rated Concealed Vertical Rod Exit Device, Narrow Stile Grooved Case, Less Dogging

(No reviews yet) Write a Review

Model: 3347AEO-F 4 US26
$4,319.83
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)

$4,319.83
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 3347AF-4ft Fire Rated Concealed Vertical Rod Exit Device, Narrow Stile Grooved Case, Less Dogging

Commercial-Grade Concealed Vertical Rod Exit Device for Narrow Stile Doors

The Von Duprin 3347AF-4ft is a fire-rated, 4-foot concealed vertical rod exit device engineered for narrow stile single and double doors in demanding institutional environments. Featuring a distinctive grooved mechanism case, this device accommodates door stiles as narrow as 2-1/8" (44 mm) for aluminum stiles and as narrow as 4" (102 mm) for wood door stiles, with a 5/8" bottom bolt concealed vertical rod configuration. Certified to ANSI/BHMA A156.3 2014 Grade 1 and UL listed under ANSI/UL 10C for fire-rated applications, the 3347A-F delivers the reliability required for schools, hospitals, and government facilities. The device is non-handed (except when the SS signal switch option is used) and features a one-piece center case cover for streamlined installation and maintenance.

Professional Features & Benefits

  • Narrow Stile Compatibility: Fits aluminum door stiles as narrow as 2-1/8" (44 mm) and wood door stiles as narrow as 4" (102 mm), making it ideal for a wide range of commercial door configurations.
  • Concealed Vertical Rod Design: 47-series concealed vertical rod with 5/8" bottom bolt provides a clean, architectural appearance while delivering reliable top and bottom latching for single and double doors.
  • Fire-Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, ensuring compliance with fire and life safety codes where "-F" rated hardware is required.
  • Grade 1 Certified Performance: ANSI/BHMA A156.3 2014 Grade 1 certification and ANSI/UL 305 and CAN/ULC-S132 listings confirm heavy-duty performance for high-traffic institutional applications.
  • Grooved Mechanism Case: The 3347A features a grooved case design (versus the smooth case of the 3547A), providing an architectural distinction suited to specific facility aesthetics and specifications.
  • Non-Handed Configuration: Non-handed design (except when SS signal switch option is used) simplifies inventory management and reduces installation errors across multi-door projects.
  • One-Piece Center Case Cover: Newly designed one-piece center case cover streamlines installation and provides a clean, finished appearance on the door.
  • Field-Configurable Retrofit Options: Compatible with CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) for integration with access control systems.
  • ADA and Delayed Egress Upgrade Paths: AX option available for ADA-compliant 5 lb. force operation per 2010 ADA Chapters 404.2.7 and 30934; CX/CHEXIT option available for NFPA and IBC delayed egress compliance with 15-second delay and nuisance alarm.

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"
  • Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
  • Fire Rating: Yes
  • Product Projection: 3-13/16"
  • Product Style: Push Pads
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Public and Private Educational Facilities (Schools and Universities)
  • Healthcare Institutions and Hospitals
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Mixed-Use Properties
  • Retail Establishments Requiring Fire-Rated Egress Hardware

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are engineered to the highest industry standards, with ANSI/BHMA A156.3 2014 Grade 1 certification and UL listings under ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 confirming performance in the most demanding institutional applications. The 3347A-F Series is purpose-built for high-use and high-abuse environments including schools, hospitals, and government facilities, with field-configurable options and retrofit kit compatibility to keep pace with evolving facility technology needs. When dependable, code-compliant fire-rated egress performance is essential, Von Duprin delivers the professional-grade reliability that commercial door hardware professionals trust.

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"
Product Dimension:
8-3/16" x 1-9/16" x 2-13/32"
Fire Rating:
Yes
Product Projection:
3-13/16"
Product Style:
Push Pads
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 3347AEO-F 4 US26 – Frequently Asked Questions

1) Will the Von Duprin 3347AF fit a narrow stile aluminum storefront door?
Yes. The 3347A-F concealed vertical rod device mounts on aluminum stiles as narrow as 2-1/8 inches (44 mm), and on wood door stiles down to 4 inches (102 mm). Door thickness is 1-3/4 inches. That combination is what makes it usable on aluminum entrance doors where a wide stile device physically will not land on the stile face.
2) Can I use the Von Duprin 3347AF on a fire rated door opening?
That is what the F in 3347A-F means. The device is listed under ANSI/UL 10C and CAN/ULC-S104 for fire door assemblies, and it is certified ANSI/BHMA A156.3 2014 Grade 1. One consequence a lot of buyers miss: fire rated exit devices are supplied less dogging, so there is no mechanical hold-open to latch the door back during the day. If you need dogging, you need a non-fire-rated device instead.
3) Do I have to specify a hand for the Von Duprin 3347AF?
The device itself is non-handed, so one unit covers both left and right hand reverse openings. The single exception is the SS signal switch option, which is handed. Lever trim is ordered by hand as well, so if you are adding an L trim you still call out RHR or LHR on the order.
4) Will a concealed vertical rod device latch a pair of doors without a mullion?
Yes, and that is the main reason to choose one. A concealed vertical rod exit device latches into the head frame and the threshold rather than into a strike on the jamb, so a pair of doors is secured with a clear opening between them and no removable mullion to store or reinstall. If you would rather keep the rods out of the door entirely, a rim device with a keyed removable mullion is the alternative, but it puts a post in the middle of the opening.
5) Should I order the less bottom rod option on a concealed vertical rod exit device?
Less bottom rod (LBR) deletes the bottom latch and bolt, so the door only latches at the head. It is the usual call where the floor is uneven, where carts and wheeled traffic beat up a bottom strike, or where debris and water collect at the threshold. The tradeoff is a single point of latching instead of two. On the 3347A-F the standard build uses a 5/8 inch bottom bolt in the 47-series concealed rod, and LBR is a yes/no choice at order time.
6) Which outside trim functions can I get on the Von Duprin 3347AF?
Ten trim functions are available: exit only (EO) with no outside operation, night latch (NL) and night latch with optional pull (NL-OP), lever (L) and lever with blank escutcheon (L-BE), thumbturn (T) and thumbturn with blank escutcheon (T-BE), thumbturn-and-unlocks (TL) and TL-BE, plus dummy trim (DT) for the inactive leaf of a pair. If you order an L trim, the lever design is a separate call: 06 is the default, with 01, 02, 03, 05, 07, 17 and 18 also offered.
7) Can the Von Duprin 3347AF be tied into an access control system?
Yes. Request-to-exit (RX), latchbolt monitoring (LX), the LX-RX combination, a double RX (RX2) and a waterproof RX are all offered, along with alarm exit kits (ALK, RX-ALK, LXRX-ALK). For remote unlocking you can order electric latch retraction as EL, QEL quiet electric latch retraction, or PN pneumatic. CDSI/HDSI security dogging indicators are also compatible. Specify the switch and the latch retraction as separate line items on the order.
8) Will the 3347AF latch into my existing top and bottom strikes?
Latch throw on the 3347A-F is 3/4 inch, and the device projects 3-13/16 inches off the door face with a center case measuring 8-3/16 x 1-9/16 x 2-13/32 inches. If the existing prep was cut for a different manufacturer's concealed rod, the head and threshold strike locations and the rod pocket rarely line up one for one, so plan on new strikes. Mounting fasteners are included for both wood and metal doors in 1-3/4 inch and 2-1/4 inch lengths, with sex nut and bolt (SNB) in the box.
9) What is a fire rated alternative to the Von Duprin 3347AF for a wide stile hollow metal door?
The 3347A-F is a narrow stile device and it is the wrong choice on a wide stile hollow metal leaf. For that opening, the Adams Rite 3600 Series is a fire rated Grade 1 concealed vertical rod device built for hollow metal doors, and the Adams Rite 3900 Series is a fire rated Grade 1 wide stile concealed vertical rod device with a 1-1/2 hour rating. The Sargent 12-MD8613 is another fire rated Grade 1 wide stile concealed vertical rod option, in classroom function.
10) What other narrow stile concealed vertical rod exit devices could I use instead of the Von Duprin 3347AF?
Staying narrow stile and Grade 1, the Corbin Russwin ED4800 is the closest push pad equivalent, rated for 1-3/4 inch doors and available exit only or accepting trim. Falcon offers several narrow stile Grade 1 units for 1-3/4 inch doors: the 24-C Series at 36 inches, the 1690EO at 3 feet and the 1990EO at 44 inches, all exit only. If your specification calls for a crossbar instead of a push pad, the Corbin Russwin ED7800 is the narrow stile crossbar version. One caution: several of these are exit only, meaning no outside operation at all, while the 3347A-F can be ordered with lever, thumbturn or night latch trim.
11) Which narrow stile concealed vertical rod devices look like substitutes for the 3347AF but are not fire rated?
Watch this one on a rated opening. The Adams Rite 8600 Series is narrow stile and Grade 1 but is not fire rated, and the DORMA 9600BB narrow stile push pad device is Grade 1 and not fire rated. They are legitimate choices on a non-rated opening, and on a labeled door they are not. If the door has a label, stay with the F device.
12) How do I get delayed egress on a fire rated exit device?
Order the 3347A-F with the CX/CHEXIT option. It provides a 15 second delay with nuisance alarm and is built for NFPA and IBC delayed egress requirements. That keeps the fire listing intact rather than bolting an unlisted alarm onto a rated opening.
13) What do I order for the inactive leaf of a pair when the active leaf gets a 3347AF?
Dummy trim, ordered as the DT trim function, gives the inactive leaf a matching push pad appearance with no latching mechanism. If you want the matching device from another line, the Falcon 1491DT is a narrow stile dummy trim concealed vertical rod device with a 9970 pull for 1-3/4 inch doors. Matching the pair visually is usually the reason this comes up on storefront entrances.
14) Is the Von Duprin 3347AF heavy duty enough for a school or hospital corridor?
It is certified ANSI/BHMA A156.3 2014 Grade 1, the highest duty classification for exit devices, and additionally listed to ANSI/UL 305 and CAN/ULC-S132 for panic hardware. It is a commercial device, built for schools, healthcare and government buildings. For a property manager standardizing a building, the non-handed body means one part number covers every opening of the same width regardless of swing.
15) What is the difference between the Von Duprin 3347A and the 3547A?
They are the same concealed vertical rod exit device with different mechanism case treatments: the 3347A uses a grooved case and the 3547A a smooth case. Both are narrow stile 33/35 Series push pad devices, and the 3347AF version carries ANSI/BHMA A156.3 2014 Grade 1 with the UL 10C fire listing. The choice is an architectural one, driven by what the specification or the existing devices on the adjacent openings call for, not by performance.
16) Which concealed vertical rod exit device should I use if the doors are thicker than 1-3/4 inch?
The Von Duprin 3347AF is specified for 1-3/4 inch doors. Where the leaf is thicker, the DORMA 9100 Series covers 1-3/4 inch to 2-1/4 inch as a Grade 1 heavy duty wide stile pushpad concealed vertical rod device, and the DORMA 9600BB covers the same 1-3/4 inch to 2-1/4 inch range in a narrow stile pushpad. Both DORMA devices are non-fire-rated, so a rated opening with a thick leaf needs the fire listing confirmed separately.
17) Does the Falcon 1690EO substitute for a Von Duprin 3347AF?
Only on a non-rated exit-only opening. The Falcon 1690EO is a Grade 1 narrow stile concealed vertical rod device for 1-3/4 inch doors, which matches the 3347AF on stile type and door thickness, but it is an exit only device with no outside trim. The 3347AF is offered in trim functions including lever, night latch, night latch with optional pull, thumbturn, and thumbturn-and-unlocks, so if the door needs keyed or lever re-entry from the outside the 1690EO does not cover it. Confirm the fire rating on the Falcon before using it on a rated opening.
18) What is the difference between a push pad concealed vertical rod device and a crossbar one when replacing an existing narrow stile device?
The Von Duprin 3347AF is a push pad style device. The Corbin Russwin ED7800 is a Grade 1 narrow stile concealed vertical rod device with a crossbar actuator instead, for 1-3/4 inch doors, and accepts operator trim. The two are not visual matches across a run of doors, so on a building where the other leaves already wear push pads the ED7800 will read differently even though both are narrow stile Grade 1 concealed vertical rod. Corbin Russwin's push pad narrow stile equivalent is the ED4800.
19) I need a concealed vertical rod device with hex dogging. Does the Von Duprin 3347AF offer that?
No. The 3347AF is a less dogging device, which is standard for fire-rated exit hardware since a fire-rated device cannot be held in a dogged, unlatched state. The Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod device for metal doors at 36 by 84 inches that is supplied with hex dogging. Dogging belongs on non-rated openings only, so match the choice to whether the wall is rated.
20) Which narrow stile concealed vertical rod device works with an access control system for electric latch retraction and request-to-exit monitoring?
The Von Duprin 3347AF is configurable with QEL quiet electric latch retraction, EL electric latch retraction and PN pneumatic retraction, along with RX request-to-exit, LX latchbolt monitoring, LX-RX combination and WP-RX waterproof switches. Among the narrow stile Grade 1 peers, the Corbin Russwin ED4800 and the Falcon 24-C Series are both exit only base devices for 1-3/4 inch doors, so electrification on those has to be specified against their own option lists rather than assumed to carry over.
21) What are the finish options on the Von Duprin 3347AF, and how do I match existing hardware?
Ten finishes are offered: 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. On aluminum storefront the usual matches are 628 with clear anodized frames and 710 with dark bronze anodized frames. Order by the BHMA number rather than the color name and the device will match the other openings.
22) For a facility standardizing exit devices across many narrow stile doors, which concealed vertical rod devices can be ordered non-handed?
The Von Duprin 3347AF is non-handed except when the SS signal switch option is specified, so a single part number covers both swings. The BEST Precision 2601 Series is also a non-handed narrow stile concealed vertical rod device, in an exit only function. Non-handed stock cuts the number of line items a facility has to carry and removes the most common ordering error on multi-door projects.
23) Which narrow stile concealed vertical rod exit devices are available in a 44 to 48 inch width for wider door leaves?
The Von Duprin 3347AF-4ft covers a 48 inch door as a narrow stile Grade 1 fire-rated device. The Falcon 1990EO is a Grade 1 narrow stile concealed vertical rod device for 1-3/4 inch doors offered at 44 inches in an exit only function, and the CRL Jackson 1085 Series is a 48 inch non-handed concealed vertical rod panic device in a wide stile exit only configuration. Device width has to follow the door leaf width, so confirm the leaf before matching a peer.
24) Is the BEST Precision 2801 an alternative to the Von Duprin 3347AF on an aluminum storefront door?
No. The BEST Precision 2801 Series is a wide stile concealed vertical rod exit device, and an aluminum storefront leaf will not give it the rail width it needs. The 3347AF is built for narrow stile and fits aluminum stiles as narrow as 2-1/8 inch. For a narrow stile BEST device, the Precision 2601 Series is the narrow stile concealed vertical rod in the family.
How fast can I get the Von Duprin 3347AEO-F 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-F 4 US26 come with a warranty?
Absolutely. The Von Duprin 3347AEO-F 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-F 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-F 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.
!