Von Duprin 3347AF-3ft Fire Rat...
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$4,204.00
$2,663.69
Von Duprin 3347AF-3ft Fire Rated Grooved Case Narrow Stile Concealed Vertical Rod Exit Device Less Dogging

Von Duprin 3347AF-3ft Fire Rated Grooved Case Narrow Stile Concealed Vertical Rod Exit Device Less Dogging

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Model: 3347AEO-F 3 US26D
$4,204.00
$2,663.69
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$2,663.69
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Von Duprin 3347AF-3ft Fire Rated Grooved Case Narrow Stile Concealed Vertical Rod Exit Device Less Dogging

Commercial-Grade Concealed Vertical Rod Panic Exit Hardware for Single and Double Doors

The Von Duprin 3347AF-3ft is a fire rated, grooved case, narrow stile concealed vertical rod exit device engineered for demanding institutional and commercial applications. Designed for all types of single and double doors, this device fits door stiles as narrow as 2-1/8" (44 mm) for metal doors and as narrow as 4" (102 mm) for wood door stiles, accommodating a 36" door width with a 1-3/4" door thickness. Certified to ANSI/BHMA A156.3 2014 Grade 1 and UL listed under ANSI/UL 10C for fire-rated applications, the 3347A features a distinctive grooved mechanism case and a newly designed one-piece center case cover for enhanced durability. The device is non-handed for flexible installation and 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 metal doors and 4" (102 mm) for wood doors, making it ideal for narrow stile door applications.
  • Door Width & Thickness: Designed for 36" doors with a 1-3/4" door thickness range, ensuring a precise and secure fit in standard commercial door configurations.
  • Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, providing compliant life-safety performance in fire-rated door assemblies.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards as well as ANSI/UL 305 and CAN/ULC-S132, representing the highest level of industry certification for panic exit hardware.
  • Grooved Mechanism Case: The 3347A features a grooved case design with a newly designed one-piece center case cover, distinguishing it from the smooth-case 3547A for architectural differentiation.
  • Non-Handed Design: The concealed vertical rod device is non-handed (except when the SS signal switch option is used), simplifying inventory management and installation flexibility.
  • Concealed Vertical Rod with 5/8" Bottom Bolt: The "47" device type designation indicates a concealed vertical rod configuration with a 3/4" latch throw and 5/8" bottom bolt for secure door latching.
  • Retrofit & Upgrade Ready: Compatible with CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) for evolving access control needs.
  • ADA & Delayed Egress Options: Available with AX accessible device option certified to 5 lb. force ADA requirements, and CX CHEXIT delayed egress option meeting NFPA and IBC requirements with 15-second delay and nuisance alarm.
  • Fasteners Included: Includes 1-3/4" and 2-1/4" wood/metal door fasteners with SNB included for complete installation readiness.

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: Yes
  • 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
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Retail Establishments

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 compliance for fire-rated and panic exit applications. The 3347A grooved case design with one-piece center case cover and narrow stile compatibility as low as 2-1/8" reflects Von Duprin's commitment to versatile, durable commercial hardware. Trusted in schools, hospitals, and government facilities, Von Duprin exit devices deliver dependable life-safety performance in the most demanding institutional environments.

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:
36"
Dogging Configuration:
Hex Key Dogging
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 3 US26D – Frequently Asked Questions

1) Will the Von Duprin 3347A concealed vertical rod device fit a narrow stile aluminum door?
Yes. The 3347A fits metal door stiles as narrow as 2-1/8 inches (44 mm). On wood doors the stile has to be at least 4 inches (102 mm), so a narrow wood stile is out. Door thickness is 1-3/4 inches, and the device covers a 36 inch door width.
2) Is the Von Duprin 3347AF fire rated, and can I use it on a labeled fire door?
Fire rated, and listed to ANSI/UL 10C and CAN/ULC-S104. That is why it comes less dogging: a fire exit device cannot be dogged down, so it is hex key dogging only on the non-fire versions of the family. It also carries ANSI/BHMA A156.3 2014 Grade 1 plus ANSI/UL 305 and CAN/ULC-S132 panic listings.
3) Do I have to specify a hand when ordering a 3347A exit device?
The device itself is non-handed, so one part covers both swings. Handing still has to be picked on the order (RHR or LHR) because it drives the trim and the switch options, and the SS signal switch option is the one case where the device becomes handed.
4) Should I order the 3347A less bottom rod, and what does that change?
Less bottom rod removes the bottom latch and rod, which kills the usual problems: the bottom bolt dragging on carpet, filling with grit, or getting bent by carts. With LBR the door holds only at the top, so it needs a proper top latching arrangement and, on a fire door, an auxiliary fire pin. Standard configuration latches at both points with a 3/4 inch top latch throw and a 5/8 inch bottom bolt. High traffic school and hospital openings are where LBR earns its keep.
5) What outside trim options can I get with the Von Duprin 3347A, and how do I pick one?
Trim runs from no outside operation to full lever entry: EO exit only, DT dummy trim, NL night latch, NL-OP night latch with optional pull, L lever, L-BE lever with blank escutcheon, T thumbturn, T-BE thumbturn with blank escutcheon, TL thumbturn and unlocks, and TL-BE. Pick EO for a pure egress door, NL for a cylinder-only entry where staff key in, and an L function where the door needs a lever on the outside. With any L trim you also choose the lever design: 06 is the default, with 01, 02, 03, 05, 07, 17 and 18 also available.
6) Can I add electric latch retraction or request-to-exit monitoring to a 3347A later?
Both are order options on the device rather than field add-ons, so specify them up front. Latch retraction comes as EL electric, QEL quiet electric, or PN pneumatic. Switch options are RX request to exit, LX latchbolt monitor, LX-RX combined, RX2 double request to exit, WP-RX waterproof, ALK alarm exit kit, RX-ALK, and LXRX-ALK. The device also accepts CDSI/HDSI security dogging indicators. QEL is the usual pick for access control on an occupied corridor because it is far quieter than EL.
7) What other narrow stile concealed vertical rod exit devices could I use instead of the Von Duprin 3347A?
On the narrow stile side, the Corbin Russwin ED4800 is a Grade 1 narrow stile concealed vertical rod for 1-3/4 inch doors that is exit only and accepts trim, and the ED7800 is the crossbar version of the same idea for openings where a crossbar rather than a push pad is wanted. Falcon offers several 1-3/4 inch narrow stile Grade 1 exit-only devices, including the 24-C in 36 inch, the 1690EO in 3 ft, and the 1990EO in 44 inch for a taller or wider leaf. The Adams Rite 8600 Series is narrow stile for aluminum doors but is not fire rated, so it is not a swap for a labeled opening.
8) What concealed vertical rod exit device should be used instead of the Von Duprin 3347A on a wide stile hollow metal or wood door?
The 3347A is a narrow stile device, so on a wide stile leaf the substitutes are the Corbin Russwin ED5800, a Grade 1 wide stile concealed vertical rod device for 1-3/4 inch doors, or the Adams Rite 3600 Series, a Grade 1 fire rated concealed vertical rod device for hollow metal doors in wide stile. On wood doors, the BEST Precision 2701 Series is a wide stile reversible concealed vertical rod device. Each keeps the concealed rod configuration; the difference is the stile width the chassis is cut for.
9) What is the difference between a concealed vertical rod exit device and a rim device on a pair of doors?
A concealed vertical rod device like the 3347A latches at the head and the threshold, with the rods hidden inside the door, so a pair of doors can be secured with no center mullion and nothing projecting into the opening. Rim devices latch into a strike on the frame or on a removable mullion, which is simpler to install and service but puts hardware in the middle of the opening. Concealed rod is the choice when the clear opening and the look matter, as on aluminum storefront and institutional entrances.
10) How high off the floor does the 3347A push pad mount?
Device centerline is 39-13/16 inches from finished floor. That is the number to lay out from when you are matching the push pad height across a run of doors, and it keeps the touchpad inside the 34 to 48 inch band code expects for operable hardware. Projection off the door face is 3-13/16 inches, which matters where the door swings into a corridor or past a wall return.
11) What is the AX accessible option on Von Duprin exit devices?
AX drops the push force on the touchpad to meet the 5 lb. ADA requirement. Specify it on openings that have to meet accessible operating force, common in schools, healthcare and government work. It is a required yes/no choice when ordering the 3347A. If delayed egress is what the opening needs instead, the CX CHEXIT option gives a 15-second delay with nuisance alarm to NFPA and IBC requirements.
12) What is the difference between the Von Duprin 3347A and the 3547A?
Case appearance. The 3347A has a grooved mechanism case with a one-piece center case cover; the 3547A is the smooth case version of the same 33/35 Series device. Pick whichever matches the other openings in the building.
13) What fasteners come with the Von Duprin 3347A, and do I need anything else to install it?
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) hardware is included, so the through-bolt case is covered out of the box. What is not in the device carton is the outside trim and cylinder for any keyed function, so an NL or L-function opening still needs its trim and a mortise cylinder ordered alongside.
14) What is a good fire rated alternative if my doors have wide stiles instead of narrow?
The 3347A will not work on a wide stile door setup where you need wide stile hardware, and the fire rated wide stile concealed vertical rod options include the Adams Rite 3600 Series and 3900 Series, both Grade 1 and fire rated, and the Sargent 12-MD8613, a Grade 1 fire rated classroom function device. If the opening is not fire rated, the Adams Rite 8500 Series is the wide stile non-rated equivalent.
15) Is a crossbar concealed vertical rod device like the Corbin Russwin ED7800 interchangeable with the Von Duprin 3347A?
They serve the same opening but present differently at the door. The 3347A is a push pad device, while the Corbin Russwin ED7800 is a Grade 1 narrow stile crossbar concealed vertical rod device for 1-3/4 inch doors. Both are narrow stile Grade 1 concealed vertical rod hardware, so the stile and rod work is comparable, but a crossbar changes the touch surface and the look of the door face - relevant if you are matching a run of existing push pad openings.
16) Which narrow stile concealed vertical rod devices are exit only, with no lever or thumbturn trim available?
The Falcon 1690EO, Falcon 1990EO, and Falcon 24-C are all Grade 1 narrow stile concealed vertical rod devices for 1-3/4 inch doors with an exit only function, and the BEST Precision 2601 is a narrow stile non-handed concealed vertical rod device in exit only. Those cover an opening that never needs to be entered from outside. The Von Duprin 3347A covers exit only as one of its trim functions alongside lever, night latch, and thumbturn configurations, so it is the choice when some openings in the same run need outside trim and some do not.
17) Is the Sargent MD8613 a direct replacement for a Von Duprin 3347A on a 36 inch metal door?
Not on a narrow stile. The Sargent MD8613F is a Grade 1 heavy duty concealed vertical rod device for 36 inch by 84 inch metal doors with hex dogging, which matches the 3347A on 36 inch door width, Grade 1, and hex key dogging. The related Sargent 12-MD8613 is fire rated Grade 1 in classroom function, but it is a wide stile device. The 3347A fits stiles as narrow as 2-1/8 inch on metal doors, so on an aluminum or narrow stile leaf the Sargent wide stile chassis will not land.
18) What are the finish options on the Von Duprin 3347A exit device?
Ten finishes, and they cover both the brass/bronze side and the architectural aluminum side: 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 and 710 are the two that normally match existing aluminum entrances.
19) I need matching dummy trim on the inactive leaf of a pair. What do I order?
On the 3347A itself, DT dummy trim is one of the trim functions, so the inactive leaf can carry a matching push pad with no latching. If the pair is Falcon rather than Von Duprin, the Falcon 1491DT is a narrow stile dummy trim device for 1-3/4 inch doors supplied with a 9970 pull in 42 inch.
20) Are any concealed vertical rod exit devices non-handed like the Von Duprin 3347A, or do I need to specify hand?
The Von Duprin 3347A is non-handed, and the BEST Precision 2601 Series is likewise a narrow stile non-handed concealed vertical rod device in exit only, while the BEST Precision 2701 Series is a wide stile reversible device for wood doors. Non-handed or reversible chassis reduce what you have to stock across a facility; handed devices have to be counted per opening before ordering.
21) For standardizing a school or hospital on Grade 1 concealed vertical rod hardware, which peers hold the same grade as the Von Duprin 3347A?
The Von Duprin 3347A is ANSI/BHMA Grade 1. Grade 1 concealed vertical rod peers include the Corbin Russwin ED4800 and ED7800 in narrow stile and ED5800 in wide stile, the Falcon 1690EO, 1990EO and 24-C in narrow stile, the Adams Rite 3600, 3900, 8500 and 8600, the DORMA 9100 and 9600BB, and the Sargent MD8613F. Grade is only the first filter - within that group, fire rating and stile type still split the field, and the 3347A is the fire rated narrow stile member of it.
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Does the Von Duprin 3347AEO-F 3 US26D come with a warranty?
Absolutely. The Von Duprin 3347AEO-F 3 US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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