Von Duprin 3347A-3ft Grooved C...
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Von Duprin 3347A-3ft Grooved Case Narrow Stile Concealed Vertical Rod Exit Device, 36" Grade 1

Von Duprin 3347A-3ft Grooved Case Narrow Stile Concealed Vertical Rod Exit Device, 36" Grade 1

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Model: 3347AEO 3 US26
$4,127.00
$2,614.90
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Von Duprin 3347A-3ft Grooved Case Narrow Stile Concealed Vertical Rod Exit Device, 36" Grade 1

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

The Von Duprin 3347A-3ft is a 36" grooved case, narrow stile concealed vertical rod exit device engineered for demanding commercial and institutional environments. Designed to fit door stiles as narrow as 2-1/8" (44 mm) for aluminum frames and as narrow as 4" (102 mm) for wood door stiles, this device delivers reliable panic exit performance across single and double door configurations. Certified to ANSI/BHMA A156.3 2014 Grade 1 standards and UL listed for panic exit hardware, the 3347A features a distinctive grooved mechanism case, a one-piece center case cover, and a non-handed design for versatile installation. With a 3/4" latch throw, hex key dogging, and a device centerline height of 39-13/16" from finished floor, this exit device is built to meet the rigorous demands of schools, hospitals, and government facilities.

Professional Features & Benefits

  • Narrow Stile Compatibility: Fits door stiles as narrow as 2-1/8" (44 mm) for aluminum frames and 4" (102 mm) for wood door stiles, accommodating a wide range of commercial door configurations.
  • 36" Door Coverage: Sized for 36" doors with a product dimension of 8-3/16" x 1-9/16" x 2-13/32" and a product projection of 3-13/16" for precise, low-profile installation.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards, ANSI/UL 305, and CAN/ULC-S132, ensuring compliance with the highest industry performance benchmarks.
  • Grooved Mechanism Case Design: The 3347A features a grooved case (versus the smooth case of the 3547A) with a newly designed one-piece center case cover for a refined architectural appearance and structural integrity.
  • 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 & Retrofit Kits: Supports a broad range of field-configurable options including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) for access control integration.
  • ADA & 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.
  • Comprehensive Fastener Package: Includes 1-3/4" and 2-1/4" wood/metal door fasteners with SNB included for straightforward installation on both wood and metal doors.
  • Door Thickness: Designed for 1-3/4" door thickness for standard commercial door applications.

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: 36"
  • 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 (Schools and Universities)
  • Healthcare Institutions (Hospitals and Clinics)
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Retail Establishments

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are certified to ANSI/BHMA A156.3 2014 Grade 1 standards and listed under ANSI/UL 305 and CAN/ULC-S132, reflecting a commitment to the highest levels of panic hardware performance and code compliance. The 3347A series is purpose-built for high-use and high-abuse institutional environments — including schools, hospitals, and government facilities — with a robust grooved case construction, one-piece center case cover, and a comprehensive suite of field-configurable retrofit options to keep pace with evolving facility needs. When dependable, code-compliant 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
Tags:
von duprin 3347, von duprin 3347a, 3347 von duprin, 3347a von duprin, 3347a, von duprin 3347a eo
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
36"
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 3 US26 – Frequently Asked Questions

1) Will the Von Duprin 3347A concealed vertical rod device fit a narrow aluminum stile door?
Narrow stile is what the 3347A is built for. It fits aluminum door stiles as narrow as 2-1/8 inches (44 mm), and wood stiles down to 4 inches (102 mm). If you are hanging it on a standard aluminum storefront leaf, measure the stile face before you order: anything under 2-1/8 inches is out of range and you need a different device family.
2) What door thickness does the Von Duprin 3347A exit device work on?
One thickness: 1-3/4 inches, the standard commercial leaf. The 3347A is not a range device, so a 2-1/4 inch thick door is outside it. For thicker doors, the DORMA 9600BB narrow stile concealed vertical rod covers 1-3/4 to 2-1/4 inches.
3) Do I have to specify handing on the Von Duprin 3347A?
The device itself is non-handed, so the chassis works either way. Handing still gets picked on the order (RHR or LHR) because the trim and switch work follow the door swing, and the one case where handing is truly locked in is the SS signal switch option, which is handed. If you are stocking spares for a building with doors swinging both directions, the non-handed chassis is the reason one part number covers them.
4) Will the 3347A latch a pair of doors without a center mullion?
Yes, and that is the point of a concealed vertical rod. The rods run inside the door and latch at the head and the threshold rather than into a strike on a mullion, so a pair of doors secures with a clear opening between them. Latch throw is 3/4 inch top and bottom. If you would rather keep a mullion and use a rim device, you lose the clear width but gain a simpler strike and no floor latch to keep clean.
5) How do I avoid a bottom rod and floor strike on a concealed vertical rod exit device?
Order the 3347A less bottom rod. That drops the bottom latch and floor strike, which is what most people want on a school or hospital door where dirt and mopping wreck a bottom latch. With less bottom rod you specify the top Pullman latch, and if the opening is getting an electric strike, the ES top Pullman latch is the one to call out (it is only offered with less bottom rod). Standard configuration uses PL top and PL bottom.
6) Is there a version of the Von Duprin 3347A that meets the 5 pound ADA opening force?
Yes, the AX accessible device option. It is certified to the 5 lb. force requirement per 2010 ADA Chapters 404.2.7 and 30934, and to the 2013 California Building Code Chapter 11B-309.4. If you are working an accessible route in a school or a public building, AX is a yes/no you select when ordering, not a field change, so call it out on the purchase order.
7) The 3347A is not fire rated - what concealed vertical rod device should I use on a fire rated opening?
The Von Duprin 3347A carries a fire rating value of No, so a labeled opening needs a device certified for it. The Adams Rite 3600 Series is a fire rated concealed vertical rod exit device for hollow metal doors, and the Adams Rite 3900 Series is a fire rated concealed vertical rod device with a 1-1/2 hour rating; both are Grade 1 wide stile. The Sargent 12-MD8613 is a Grade 1 fire rated concealed vertical rod device in classroom function, wide stile. Note that all three are wide stile, so an aluminum narrow stile frame will not accept them.
8) What is the closest narrow stile concealed vertical rod equivalent to the Von Duprin 3347A from another manufacturer?
The Von Duprin 3347A is a Grade 1 narrow stile concealed vertical rod exit device for 1-3/4 inch doors. The Corbin Russwin ED4800 is a Grade 1 narrow stile concealed vertical rod device also listed for 1-3/4 inch doors, offered exit only and accepting trim. The DORMA 9600BB is a Grade 1 narrow stile concealed vertical rod pushpad device in a 36 inch size for 1-3/4 inch to 2-1/4 inch doors. The Adams Rite 8600 Series is a Grade 1 narrow stile concealed vertical rod device for aluminum doors. All three cover the same narrow stile concealed rod application as the 3347A.
9) My door is wider than 36 inches - what concealed vertical rod device covers a larger opening than the 3347A-3ft?
The Von Duprin 3347A-3ft is sized at 36 inches. For a wider leaf, the Falcon 1990EO is a Grade 1 narrow stile concealed vertical rod exit only device in a 44 inch size for 1-3/4 inch doors, and the CRL Jackson 1085 Series is a 48 inch non-handed concealed vertical rod panic exit device in exit only function, wide stile. Confirm the stile width first, since the 1085 is a wide stile device.
10) What trim functions can I order with the Von Duprin 3347A?
Eleven trim functions: exit only (EO), lever (L), lever with blank escutcheon (L-BE), lever dummy trim (L-DT), dummy trim (DT), night latch (NL), night latch with optional pull (NL-OP), thumbturn (T), thumbturn with blank escutcheon (T-BE), thumbturn and unlocks (TL), and TL-BE. If you pick an L function, you also choose the lever design: 06 (default), 01, 02, 03, 05, 07, 17 or 18. Exit only means no outside operation at all, which is the usual call on a rear egress door.
11) Does the Von Duprin 3347A come with dogging, and can I get cylinder dogging?
Hex key dogging is standard, which holds the pushpad depressed so the door stays in free push during business hours. Two alternatives on the order: CD cylinder dogging, where a keyed cylinder does the dogging instead of a hex wrench (worth it if you do not want maintenance carrying an allen key), and LD less dogging, which removes the feature entirely. Some jurisdictions and some access control schemes want LD, so check the spec on the drawing.
12) What are my options for tying a 3347A exit device into an access control system?
Several, and they stack. For monitoring, RX request-to-exit, LX latchbolt monitor, LX-RX combined, RX2 double request-to-exit, and WP-RX for wet or washdown locations. For remote unlocking, EL electric latch retraction, QEL quiet electric latch retraction, or PN pneumatic. Alarm kits are available as ALK (less switch), RX-ALK, or LXRX-ALK. QEL is the one to pick where noise matters, a library or a patient corridor, since standard EL solenoid retraction is audible.
13) Can I get delayed egress on a Von Duprin 33 series concealed vertical rod device?
The CX CHEXIT option provides 15-second delayed egress and meets NFPA and IBC requirements for it. That is the configuration for a memory care wing, a retail loss-prevention door, or anywhere you need to hold someone at the door briefly before release. Confirm your AHJ accepts delayed egress on that specific opening, since occupancy type governs whether it is permitted at all.
14) What is the difference between the Von Duprin 3347A and the 3547A?
Case appearance. The 3347A has a grooved mechanism case; the 3547A is the smooth case version of the same device. Both use the newly designed one-piece center case cover. If you are matching existing hardware down the corridor, look at the case face on what is already installed and order to match, because the grooved and smooth cases do not blend visually side by side.
15) What mounting height and clearance do I need to plan for a 3347A exit device?
Device centerline sits 39-13/16 inches from finished floor, which is the number to lay out against on the door and to coordinate with any glass lite or muntin. Projection off the door face is 3-13/16 inches, so allow that against a wall return, a return-swing partition, or an adjacent door in a vestibule. Case dimensions are 8-3/16 x 1-9/16 x 2-13/32 inches, and the device is sized for a 36 inch door.
16) Are fasteners included with the Von Duprin 3347A, or do I need to order them separately?
Fasteners come in the box: 1-3/4 inch and 2-1/4 inch wood and metal door fasteners, with SNB (sex nuts and bolts) included. So the same carton installs on a hollow metal leaf or a wood leaf without a separate hardware run. What is not in the box is the trim you selected and any cylinder for CD cylinder dogging or a night latch function, so put those on the same order.
17) My door has a wide stile. Is a narrow stile concealed vertical rod device still the right call?
No, and forcing a narrow stile device onto a wide stile opening is a common ordering mistake. On a wide stile door, look at the Corbin Russwin ED5800, Grade 1 for 1-3/4 inch doors; the DORMA 9100 Series, Grade 1 heavy duty for 1-3/4 to 2-1/4 inch doors; the Adams Rite 8500 Series for hollow metal; or the BEST Precision 2801 and 2701, the 2701 being reversible for wood doors. The CRL Jackson 1285 push pad device covers narrow, medium or wide stile.
18) Is the Von Duprin 3347A tough enough for a high traffic school or hospital door?
It is certified to ANSI/BHMA A156.3 2014 Grade 1, the top performance tier for exit devices, and the 33 series case is built for high-use, high-abuse institutional openings. Grade 1 is what a school, hospital, or government facility spec will normally require. Note the device is non-fire-rated, so on labeled stair and corridor doors you will be specifying different hardware alongside it.
19) I only need push to exit with no trim and no options - is there a simpler alternative to the 3347A?
The Von Duprin 3347A is a push pad device offered in trim functions from exit only through lever, thumbturn and night latch, with switch and latch retraction options. If the opening only needs egress, the Falcon 24-C Series is a Grade 1 narrow stile concealed vertical rod device in a 36 inch exit only configuration for 1-3/4 inch doors, and the Falcon 1690EO is a Grade 1 narrow stile concealed vertical rod exit only device in a 3 ft size for 1-3/4 inch doors. The BEST Precision 2601 is a narrow stile, non-handed concealed vertical rod device in exit only form.
20) I need a crossbar instead of a push pad on a narrow stile concealed vertical rod door - what should I order?
The Von Duprin 3347A is a push pad device. Where a crossbar is required to match existing hardware, the Corbin Russwin ED7800 is a Grade 1 narrow stile crossbar concealed vertical rod exit device for 1-3/4 inch doors, exit only and accepting operator trim. It covers the same narrow stile concealed rod opening with the crossbar actuator instead of a pad.
21) Is the Falcon 1491DT a substitute for the 3347A on the inactive leaf of a pair?
It is not an operating device. The Falcon 1491DT is a Grade 1 narrow stile concealed vertical rod unit in dummy function with a 9970 pull, sized 42 inches for 1-3/4 inch doors, so it provides the appearance and pull without a latching mechanism. The Von Duprin 3347A is a Grade 1 device with a 3/4 inch latch throw and hex key dogging. The 3347A is also offered in a DT dummy trim function if the matching appearance is what the inactive leaf calls for.
22) I have a mix of narrow, medium and wide stile doors in one building - is there one concealed vertical rod device that covers all of them?
The Von Duprin 3347A is a narrow stile device, so it standardizes only the narrow stile openings. The CRL Jackson 1285 is a push pad concealed vertical rod panic exit listed for narrow, medium or wide stile in exit only function, which lets one model cover a mixed stile group where egress only is acceptable. If the openings need lever, thumbturn or night latch trim, the 3347A carries those trim functions.
23) What concealed vertical rod exit device works on a wide stile wood door instead of the 3347A?
The Von Duprin 3347A is a narrow stile device for 1-3/4 inch doors. The BEST Precision 2701 is a wide stile reversible concealed vertical rod exit device for wood doors, and the BEST Precision 2801 is a wide stile concealed vertical rod exit device. Either addresses the wide stile wood leaf that a narrow stile device cannot be prepped into.
24) I need a concealed vertical rod device with hex dogging and lever trim on a 36 inch metal door - how does the Sargent MD8613F-LTRIM compare to the 3347A?
The Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod exit device for metal doors at 36 by 84 inches with hex dogging and lever trim. The Von Duprin 3347A is Grade 1 with hex key dogging, sized 36 inches, non-handed, and offered in L lever trim with a choice of lever designs. The Von Duprin device is specified for narrow stile openings down to the aluminum stile widths its series covers, which is the deciding factor between the two.
25) What finishes does the Von Duprin 3347A exit device come in for matching existing hardware?
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 storefront work, 628 aluminum and 710 dark bronze anodized are the two that line up with typical anodized frame finishes. 626 satin chrome is the usual institutional standard if you are standardizing a school or hospital across openings.
26) I only need a matching inactive leaf or a pull with no panic function. What do I order?
Order the 3347A in DT dummy trim function. That gives you the same grooved case and pushpad appearance with no latching, which is what keeps a pair of doors looking identical when only one leaf needs to operate. Falcon's 1491DT narrow stile dummy device with a 9970 pull, in 42 inch, is the equivalent from another line if you are matching Falcon hardware elsewhere in the building.
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Does the Von Duprin 3347AEO 3 US26 come with a warranty?
Absolutely. The Von Duprin 3347AEO 3 US26 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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