Von Duprin 3547AF-3ft Fire Rat...
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$4,204.00
$2,663.69
Von Duprin 3547AF-3ft Fire Rated Concealed Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

Von Duprin 3547AF-3ft Fire Rated Concealed Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

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Model: 3547AEO-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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Von Duprin 3547AF-3ft Fire Rated Concealed Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

ANSI/BHMA Grade 1 Certified Concealed Vertical Rod Solution for Single and Double Doors

The Von Duprin 3547AF-3ft is a fire rated, narrow stile concealed vertical rod exit device engineered for demanding institutional and commercial applications. Featuring a smooth mechanism case, this 36" device fits door stiles as narrow as 2-1/8" (44 mm) for aluminum stiles and as narrow as 4" (102 mm) for wood door stiles, and accommodates a door thickness of 1-3/4". Certified to ANSI/BHMA A156.3 2014 Grade 1 standards and listed under ANSI/UL 10C for fire-rated applications, the 3547A-F delivers reliable panic exit hardware performance in schools, hospitals, and government buildings. The device is non-handed (except when the SS signal switch option is used), offering flexible installation across a wide range of door configurations.

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 modern narrow stile door systems.
  • Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, ensuring code-compliant performance in fire-rated door assemblies.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards — the highest industry certification — for long-term reliability in high-traffic institutional environments.
  • Smooth Mechanism Case: The 3547A features a one-piece center case cover with a smooth mechanism case, distinguishing it from the grooved 3347A for a clean architectural appearance.
  • Non-Handed Design: The concealed vertical rod device is non-handed (except when the SS signal switch option is used), simplifying specification and installation across varied door configurations.
  • Concealed Vertical Rod with 5/8" Bottom Bolt: The "47" device type designation indicates a concealed vertical rod configuration with a 5/8" bottom bolt for secure, concealed latching at top and bottom of the door.
  • Field-Configurable Options & Retrofit Kits: A variety of field-configurable options are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request to exit, LX latchbolt monitoring) for access control integration. Retrofit kits allow the device to keep up with evolving technology.
  • ADA & Delayed Egress Upgrade Paths: Upgradeable to AX (ADA-compliant, certified to 5 lb. force requirements per 2010 ADA Chapters 404.2.7 and 30934 and 2013 California Building Code Chapter 11B-309.4) or CX CHEXIT (delayed egress meeting NFPA and IBC requirements, 15-second delay with nuisance alarm).
  • Comprehensive Trim & 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 a full range of levers and finishes per the 33A/35A Series catalog.
  • Additional Certifications: Also certified to ANSI/UL 305, CAN/ULC-S132, providing broad compliance for North American commercial and institutional 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: Yes
  • 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 Medical Centers)
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Retail Establishments Requiring Fire-Rated Egress Compliance

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are engineered to the highest industry standards, with the 3547A-F Series certified to ANSI/BHMA A156.3 2014 Grade 1, ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for comprehensive North American compliance. The smooth mechanism case, one-piece center case cover, and narrow stile design — fitting stiles as narrow as 2-1/8" — reflect Von Duprin's commitment to architectural versatility and institutional-grade durability. Trusted in schools, hospitals, and government buildings, Von Duprin exit devices deliver dependable performance where reliable egress is essential.

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 3547AEO-F 3 US26D – Frequently Asked Questions

1) Will the Von Duprin 3547AF fit a narrow stile aluminum storefront door?
Yes. The 3547AF concealed vertical rod device fits aluminum stiles as narrow as 2-1/8 inches (44 mm), and wood door stiles down to 4 inches (102 mm). Door thickness is 1-3/4 inches only, so it is a standard commercial door device, not an adjustable-thickness one. Projection off the door face is 3-13/16 inches, which matters if the door swings into a tight vestibule or against a return wall.
2) Is the Von Duprin 3547AF fire rated, and what standards is it listed to?
Fire rated, and listed to ANSI/UL 10C and CAN/ULC-S104. It is also certified to ANSI/BHMA A156.3 2014 Grade 1 and to ANSI/UL 305 and CAN/ULC-S132 as panic hardware. That combination is what lets it go on a fire-rated opening in a school, hospital, or government building where the AHJ is checking the label.
3) Can you dog down a Von Duprin 3547AF to hold the latches retracted during business hours?
No, and that is not a defect. Fire rated exit devices cannot be mechanically dogged, because the latches have to stay projected to keep the fire assembly closed and latched. If you need the door to push open freely during the day on a fire-rated opening, the route is electric latch retraction, EL or QEL, on an access control schedule rather than a hex key.
4) Will the 3547AF latch into my existing strike, and where does the push pad land on the door?
Latch throw is 3/4 inch, which is the standard Von Duprin exit device throw, and the bolts engage at the head and the threshold rather than at the jamb since this is a concealed vertical rod device. Device centerline sits 39-13/16 inches off the finished floor. If you are replacing an existing CVR device, check that number against the through-bolt holes already in the door before you order, because a different centerline means a new prep.
5) Should I order the 3547AF less bottom rod, and what do I give up?
Less bottom rod (LBR) removes the bottom rod and bottom latch, so nothing runs down to the threshold. Order it where the floor is uneven, where carpet or a floor closer is in the way, or where the bottom bolt collects debris and jams. What you give up is the bottom point of security, so the door relies on the top latch only. On a fire-rated opening confirm the LBR configuration is acceptable to the AHJ for that assembly. Standard configuration is a concealed vertical rod with a 5/8 inch bottom bolt, which is what the 47 device type designation means.
6) What trim functions can I get on the Von Duprin 3547AF for a classroom or storeroom door?
Trim functions run Exit Only, Dummy Trim, Lever, Lever with Blank Escutcheon, Night Latch, Night Latch with Optional Pull, Thumbturn, Thumbturn with Blank Escutcheon, Thumbturn and Unlocks, and Thumbturn and Unlocks with Blank Escutcheon. On the trim side, the 360 lever/thumbpiece trim covers Classroom, Passage, and Dummy; 386 pull trim covers Storeroom and Dummy; and 388 optional pull trim is Storeroom. For a classroom you want the 360 lever trim in the classroom function; for a storeroom door where nobody gets in from outside without a key, the 386 or 388 pull trim.
7) How do I tie a Von Duprin 3547AF into an access control system?
Two separate decisions. For monitoring, the 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 less switch, RX-ALK with RX switch, and LXRX-ALK with both LX and RX. For remote unlocking, latch retraction options are EL electric, QEL quiet electric, or PN pneumatic. QEL is the one to specify where noise matters, a library or a hospital corridor. Switches and latch retraction are ordered together, not as an either/or, and the device also takes CDSI/HDSI security dogging indicators.
8) Does the 3547AF meet the 5 pound ADA operating force requirement?
Only if you order it as AX. The AX accessible device option is certified to the 5 lb. force requirement per 2010 ADA Chapters 404.2.7 and 309.4 and 2013 California Building Code Chapter 11B-309.4. AX is a required selection on the order, so decide it up front. If the opening is on an accessible route or you are in California, order AX.
9) Concealed vertical rod or surface vertical rod, which should I use on a pair of doors?
Concealed vertical rod is the one to use when appearance matters or the rods would be abused. The rods run inside the door, so there is nothing exposed to be kicked, hung on, or vandalized, and the door face stays clean. The tradeoff is the door has to be prepped for concealed rods, which usually means ordering the door that way rather than retrofitting an existing slab, and service means opening the door up. Surface vertical rod is easier to install and service on a door already hanging. Either way, vertical rod latches at the head and the threshold, so a pair of doors is secured with no center mullion required.
10) What else can I use instead of the Von Duprin 3547AF on a narrow stile fire rated opening?
For a narrow stile fire rated opening the closest cross-brand path is the Sargent 12-MD8613, which is Grade 1 and fire rated, though it is a wide stile device, so it does not go on a 2-1/8 inch aluminum stile. Among narrow stile concealed vertical rod devices, the Corbin Russwin ED4800 is Grade 1, narrow stile, 1-3/4 inch door, exit only or accepts trim, and the Falcon 24-C is Grade 1 narrow stile at the same 36 inch width and 1-3/4 inch thickness in exit only. Check the fire label requirement on each before substituting, since the fire rating is the constraint that narrows the field fastest here.
11) The opening is not a fire door - is there a cheaper narrow stile concealed vertical rod device that skips the fire rating?
For a non-rated narrow stile opening the DORMA 9600BB is built for exactly that: a 36 inch Grade 1 narrow stile concealed vertical rod pushpad device, heavy duty, non-fire rated, covering doors 1-3/4 inch to 2-1/4 inch thick. The Adams Rite 8600 Series is another non-rated narrow stile concealed vertical rod device, built for aluminum doors. The Von Duprin 3547AF is the fire rated choice at 36 inches and 1-3/4 inch door thickness, so it is the one to keep when the assembly is rated.
12) What is the closest narrow stile fire rated concealed vertical rod alternative to the Von Duprin 3547AF?
The Corbin Russwin ED4800 is the nearest match in configuration: a Grade 1 narrow stile concealed vertical rod exit device for 1-3/4 inch doors, offered exit only and accepting trim. The Von Duprin 3547AF is also Grade 1, narrow stile, fits a 1-3/4 inch door, and carries a fire rating. Both mount on narrow stile openings, so the decision usually comes down to which trim family and which finish the rest of the building already runs.
13) Do I have to specify handing on a concealed vertical rod Von Duprin 3547AF?
The device itself is non-handed, with one exception: ordering the SS signal switch option makes it handed. Handing is still selected on the order (RHR or LHR) because the trim and switch prep follow the door swing, so give the hand of the opening even though the chassis will work either way.
14) What is the difference between the Von Duprin 3547A and the 3347A?
Case finish. The 3547A uses a smooth mechanism case with a one-piece center case cover; the 3347A is the grooved case. Function, rod configuration, and stile fit are the same family, so the choice is architectural appearance, not performance. Specify the 3547A where the designer wants a clean unbroken case face.
15) Which lever style and finish do I pick to match the rest of my building's Von Duprin hardware?
Lever choices on L trim are 01, 02, 03, 05, 06 (default), 07, 17, and 18. Finishes are 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. Two of those matter most for matching a fleet of openings: 626 satin chrome and 628 aluminum are the usual institutional and storefront defaults. Pull an existing device off a door and read the finish code stamped on it rather than eyeballing the color.
16) Can I get delayed egress on this device for a hospital or memory care unit?
Yes, through the CX CHEXIT upgrade, which gives a 15-second delay with a nuisance alarm and meets NFPA and IBC delayed egress requirements. That is the configuration for a unit where you need to slow an unauthorized exit without locking the egress path, wander management in memory care, infant security on a maternity floor, or loss prevention at a retail back door.
17) What fasteners come with the Von Duprin 3547AF, or do I need to order them separately?
Fasteners are in the box. It ships with 1-3/4 inch and 2-1/4 inch wood and metal door fasteners plus SNB (sex nut and bolt) hardware, so both a hollow metal and a wood door application are covered without a separate order. What is not in the box is the trim, which is a separate selection, and any strike or top latch prep work the opening needs.
18) My doors are wide stile hollow metal, not aluminum. Is the 3547AF the right device?
It will go on a wood stile of 4 inches or more, but if you are running wide stile hollow metal doors there are devices built for that opening: the Adams Rite 3600 Series and 3900 Series are both Grade 1 fire rated concealed vertical rod devices for hollow metal, and the Corbin Russwin ED5800 is a Grade 1 wide stile CVR for 1-3/4 inch doors. The narrow stile 3547AF is specified where stile width is the constraint, which on a hollow metal door it usually is not.
19) Can I add request-to-exit or electric latch retraction to a 3547AF later, or do I have to order it that way?
Both routes are open. The switch and latch retraction options can be ordered on the device up front, and Von Duprin also offers field-configurable options and retrofit kits so the device can be upgraded as the access control system changes. That matters on a multi-phase job or a building where card access is going in on a later budget cycle: put the mechanical device on the door now and add RX, LX, or QEL to it when the system arrives, rather than buying a second device.
20) Which Falcon concealed vertical rod device compares to the Von Duprin 3547AF on a 36 inch narrow stile door?
Falcon offers several Grade 1 narrow stile concealed vertical rod devices for 1-3/4 inch doors. The 24-C Series comes as a 36 inch narrow stile exit only device, and the 1690EO is a 3 ft narrow stile exit only device. Both are exit only, meaning no outside operating trim, while the Von Duprin 3547AF is sold across trim functions including lever, night latch, thumbturn, and dummy trim. Falcon also lists the 1990EO in a 44 inch length if the door is wider than 36 inches.
21) Is the Falcon 1491DT dummy trim device a substitute for a Von Duprin 3547AF?
No. The Falcon 1491DT is a dummy function narrow stile concealed vertical rod device with a 9970 pull, 42 inches long, and dummy trim does not latch or operate the door as an active leaf. The Von Duprin 3547AF is a fire rated Grade 1 panic device with a 3/4 inch latch throw. The 3547AF does offer a DT dummy trim configuration if the inactive leaf is what you are covering, but the two are not interchangeable on an active egress door.
22) What is the difference between a crossbar and a push pad concealed vertical rod device on a narrow stile door?
The Von Duprin 3547AF uses a push pad actuator on a narrow stile door. The Corbin Russwin ED7800 is a Grade 1 narrow stile concealed vertical rod device that uses a crossbar instead, for 1-3/4 inch doors, exit only and accepting operator trim. Crossbar devices read differently on an architectural elevation and are often specified to match existing hardware in an older building, while push pad devices are the current standard in most new specifications.
23) Can a CRL Jackson 1285 or 1085 panic device replace a Von Duprin 3547AF on a fire rated opening?
Those are exit only devices. The CRL Jackson 1285 is a push pad concealed vertical rod panic exit in exit only function fitting narrow, medium or wide stiles, and the CRL Jackson 1085 is a 48 inch non-handed concealed vertical rod panic exit, exit only, for wide stiles. Exit only means no outside trim, so if the opening needs keyed or lever entry from the pull side, the Von Duprin 3547AF is the one to hold, since it is offered with lever, night latch, and thumbturn trim functions and is fire rated.
24) I need a concealed vertical rod exit device for a wood door - is the 3547AF right?
The Von Duprin 3547AF is a narrow stile device that fits aluminum stiles as narrow as 2-1/8 inches and wood door stiles as narrow as 4 inches, on a 1-3/4 inch thick door. If the wood door has a wide stile, the BEST Precision 2701 Series is a wide stile reversible concealed vertical rod exit device built for wood doors, and the Corbin Russwin ED5800 is a Grade 1 wide stile concealed vertical rod device for 1-3/4 inch doors that accepts trim.
25) The building already runs Sargent exit devices with hex dogging - what is the Sargent match for a 36 inch concealed vertical rod door?
The Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod exit device for metal doors at 36 inches by 84 inches with hex dogging and lever trim. The Von Duprin 3547AF is also a 36 inch device with hex key dogging, offered in lever trim functions including L and L-BE. Matching the existing brand keeps one dogging key and one trim family across the facility.
26) Which non-handed concealed vertical rod devices are there besides the Von Duprin 3547AF?
The Von Duprin 3547AF is non-handed, except when the SS signal switch option is used. The BEST Precision 2601 Series is also a non-handed narrow stile concealed vertical rod device in exit only function, and the CRL Jackson 1085 is a non-handed 48 inch concealed vertical rod panic exit for wide stiles. A non-handed device removes handing from the order, which matters when you are stocking one part number across a mixed set of openings.
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