Von Duprin 8847F-4FT Fire Rate...
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$3,773.00
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Von Duprin 8847F-4FT Fire Rated Wide Stile Concealed Vertical Rod Exit Device, Less Dogging

Von Duprin 8847F-4FT Fire Rated Wide Stile Concealed Vertical Rod Exit Device, Less Dogging

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Model: 8847EO-F US26D-4
$3,773.00
$3,232.63
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,773.00
$3,232.63
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Von Duprin 8847F-4FT Fire Rated Wide Stile Concealed Vertical Rod Exit Device, Less Dogging

Commercial-Grade Fire-Rated Concealed Vertical Rod Exit Solution for Double Metal Doors

The Von Duprin 8847F-4FT is a fire-rated concealed vertical rod exit device engineered for 8' x 8' (2438 mm x 2438 mm) double metal doors in demanding commercial environments. Designed as a wide stile device within the trusted 88 Series, it accommodates door stiles as narrow as 4-3/4" (121 mm) and is available in a 4 ft (48") length that is field sizeable for single and double door applications. UL listed for 3-hour fire rating and certified to ANSI/BHMA A156.3, 2008 Grade 1, this device delivers the reliability and code compliance required for high-traffic commercial facilities.

Professional Features & Benefits

  • Wide Stile Compatibility: Designed for wide stile doors with stiles as narrow as 4-3/4" (121 mm), providing versatile installation options across a broad range of commercial door configurations.
  • Fire-Rated Performance: UL listed for 3-hour fire rating per ANSI/UL 10C and CAN/ULC-S104, ensuring code-compliant protection in fire-rated door assemblies on double metal doors up to 8' x 8' (2438 mm x 2438 mm).
  • Grade 1 Certified Construction: ANSI/BHMA A156.3, 2008 Grade 1 certified for the highest level of commercial durability and performance, meeting the most stringent industry standards.
  • Field-Sizeable 4 ft Length: The 48" crossbar is field sizeable to accommodate both single and double door applications, reducing the need for special-order sizing and simplifying installation logistics.
  • Concealed Vertical Rod Design: The 47-series concealed vertical rod configuration provides a clean, professional appearance while delivering reliable top and bottom latching for double door applications.
  • Less Dogging Configuration: Supplied without dogging hardware, suitable for fire-rated applications where dogging is not permitted per code requirements.
  • Comprehensive Certification Compliance: Meets ANSI/BHMA A156.3 (2008 Grade 1), ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for broad code acceptance across jurisdictions.
  • Expandable with Options: Compatible with E8875 electrified option for access control or fire alarm integration, RX monitoring switch, and KN knurling option for tactile hazard-area identification.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 88 Series
  • Grade: Grade 1
  • Device Centerline: 39-13/16"
  • Fasteners: All necessary mounting fasteners are 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
  • Stile Type: Wide Stile
  • Wood Door Compatible: No
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4"
  • Product Size: 48"
  • Dogging Configuration: Less Dogging
  • Fire Rating: Yes
  • Product Style: Cross Bars
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

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

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are built to the highest commercial standards, with the 8847F-4FT earning ANSI/BHMA A156.3, 2008 Grade 1 certification and a 3-hour UL fire rating for dependable performance in life-safety applications. The 88 Series wide stile design accommodates stiles as narrow as 4-3/4" (121 mm) and includes all necessary mounting fasteners, simplifying installation on double metal doors. Engineered for demanding commercial environments where fire-rated code compliance and long-term reliability are essential, Von Duprin delivers the professional-grade performance that facility managers and security professionals trust.

Manufacturer Resources

Von Duprin 88 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
88 Series
Grade:
Grade 1
Device Centerline:
39-13/16"
Fasteners:
All necessary mounting fasteners are 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
Stile Type:
Wide Stile
Wood Door Compatible:
No
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
48"
Dogging Configuration:
Less Dogging
Fire Rating:
Yes
Product Projection:
04/07/2008
Product Style:
Cross Bars
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 8847EO-F US26D-4 – Frequently Asked Questions

1) Will the 8847F work on a 2-inch thick door?
No. The 8847F-4FT is a single-thickness device for 1-3/4 inch doors, the standard commercial thickness. For thicker leaves, the DORMA 9100 Series concealed vertical rod device covers 1-3/4 to 2-1/4 inches, though it is not fire rated.
2) Why does the 8847F come without dogging?
Fire rated exit devices can't be dogged, because the latches have to stay engaged to keep the opening latched under fire conditions. The 8847F is supplied less dogging for exactly that reason. If you want a mechanically dogged device for a non-rated opening, look at a non-fire-rated CVR such as the Adams Rite 8500 Series, or Sargent's MD8613F with hex dogging.
3) What fire rating does the Von Duprin 8847F carry?
Three hours, UL listed per ANSI/UL 10C and CAN/ULC-S104, on double metal doors up to 8' x 8'. It also holds ANSI/BHMA A156.3, 2008 Grade 1 certification plus ANSI/UL 305 and CAN/ULC-S132 panic listings, so it satisfies both the panic and the fire door assembly requirements in most jurisdictions.
4) Can a 48-inch 8847F be cut down for a narrower door?
Yes. The 4 ft (48 inch) crossbar is field sizeable, so the same device covers both single and double door widths without a special-order length. Mount at the 39-13/16 inch device centerline and all necessary mounting fasteners come in the box.
5) Will a concealed vertical rod device latch a pair of doors with no mullion?
That is what it's for. The 8847F latches at the head and the threshold through 47-series rods concealed inside the door, with a 3/4 inch latch throw at each point, so a pair of metal doors is secured without a center mullion. The tradeoff versus a rim device is that the door has to be prepped for concealed rods, which in practice means ordering the doors CVR-prepped rather than retrofitting a slab that isn't.
6) Can I use the Von Duprin 8847F-4FT on a narrow stile aluminum storefront door?
No. The 8847F-4FT is a wide stile device, designed for stiles as narrow as 4-3/4 inches on metal doors. For narrow stile aluminum openings, look instead at the Adams Rite 8600 Series, a Grade 1 narrow stile concealed vertical rod device for aluminum doors, or the Corbin Russwin ED4800, a Grade 1 narrow stile concealed vertical rod device. The DORMA 9600BB is a Grade 1 narrow stile concealed vertical rod pushpad device in a 36 inch size. Note that the 8600 and 9600BB are both listed as non-fire rated, so they are not a route to a rated narrow stile opening.
7) What is the closest fire-rated concealed vertical rod equivalent to the Von Duprin 8847F-4FT from another manufacturer?
The Adams Rite 3600 Series is the nearest match on the core attributes: it is a fire-rated Grade 1 concealed vertical rod exit device built for hollow metal doors in a wide stile configuration, the same wide stile, Grade 1, fire-rated combination the 8847F-4FT carries. The difference to confirm before you order is the rating duration - the 8847F-4FT is UL listed for a 3-hour fire rating, while the Adams Rite 3900 Series is published at 1-1/2 hours. If the opening is a 3-hour assembly, verify the rating on the Adams Rite device matches before substituting.
8) Which concealed vertical rod exit device should I use if the opening is not fire rated and I want dogging?
The 8847F-4FT is supplied less dogging, which is the correct configuration for a fire-rated opening where dogging is not permitted. On a non-rated opening where you want the device dogged down during business hours, the Adams Rite 8500 Series is a Grade 1 wide stile concealed vertical rod device listed as non-fire rated, and the DORMA 9100 Series is a Grade 1 heavy duty wide stile concealed vertical rod pushpad device also listed non-fire rated. The Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod device offered with hex dogging.
9) Do I need to order the 8847F left or right hand?
The device itself is non-handed, but handing still has to be specified on the order: RHR (right hand reverse) or LHR (left hand reverse). On a pair of doors that means one leaf each way, so plan the order accordingly.
10) What trim options can I get on the Von Duprin 8847F?
Five trim functions: EO exit only, L lever, L-BE lever with blank escutcheon, TL thumb turn, and TL-BE thumb turn with blank escutcheon. If you pick a lever function you also choose the lever style, 06 (default), 01, 02, 03, 07 or 17. Exit only and thumb turn functions take no lever.
11) Can I tie the 8847F into access control or get exit monitoring?
Yes, two ways. An RX request-to-exit switch can be ordered on the device to signal the access control panel when the crossbar is pushed, and the E8875 electrified option is available for access control or fire alarm integration. KN knurling is also offered on the crossbar for tactile hazard identification, which some jurisdictions require on doors to hazardous areas.
12) What is the difference between the standard, RCB and KN crossbar on the 88 Series?
Three crossbar choices on the 8847F: standard, RCB reinforced crossbar for abuse-prone openings like schools and warehouse traffic, and KN knurled crossbar, which is the tactile warning surface used on doors leading to hazardous areas. All three are the same cross bar style device otherwise.
13) What is a comparable fire rated concealed vertical rod device if the Von Duprin 8847F doesn't suit my opening?
Among wide stile fire rated CVR devices, the Adams Rite 3600 Series is Grade 1 and fire rated for hollow metal doors, the Adams Rite 3900 Series carries a 1-1/2 hour rating, and Sargent's 12-MD8613 is a Grade 1 fire rated wide stile device in classroom function. The 8847F's distinction in that group is the 3-hour UL rating and the field-sizeable 48 inch crossbar.
14) I want a push pad instead of a crossbar concealed vertical rod device - what are my options?
The 8847F-4FT uses a crossbar style actuator. If your specification calls for a push pad, the DORMA 9100 Series is a Grade 1 wide stile concealed vertical rod push pad device, the Sargent MD8613F-LTRIM is a Grade 1 heavy duty concealed vertical rod device for 36 by 84 metal doors, and the CRL Jackson 1285 is a push pad concealed vertical rod panic exit that covers narrow, medium or wide stiles. The CRL Jackson 1285 is exit only, so it will not take lever trim the way the 8847F-4FT does in its L and TL trim functions.
15) Is the Sargent 12-MD8613 a direct substitute for the Von Duprin 8847F-4FT?
They overlap but they are not the same order. The Sargent 12-MD8613 is a fire-rated Grade 1 wide stile concealed vertical rod device, matching the 8847F-4FT on grade, stile type and fire rating. The difference is function: the Sargent is specified as classroom function, while the 8847F-4FT is ordered with a trim function selected from exit only, lever, lever with blank escutcheon, thumb turn, or thumb turn with blank escutcheon. Pick the trim function on the Von Duprin that matches the security behavior the classroom Sargent would have given you.
16) What is a simpler exit-only concealed vertical rod device if I do not need lever trim on the outside?
If the opening only needs egress with no outside operation, the CRL Jackson 1085 Series is a 48 inch non-handed exit only concealed vertical rod panic device in a wide stile configuration, which matches the 48 inch size and non-handed character of the 8847F-4FT. BEST Precision 2601 is another exit only concealed vertical rod option, though in narrow stile. The 8847F-4FT itself can be ordered in the EO exit only trim function if you want to stay with the 88 Series and keep the 3-hour fire rating.
17) How does the Corbin Russwin ED5800 compare to the Von Duprin 8847F-4FT?
Both are Grade 1 wide stile concealed vertical rod devices for 1-3/4 inch doors. The ED5800 is specified as exit only and accepts trim, and the Corbin Russwin ED7800 is the crossbar version in that family though in narrow stile. The Von Duprin 8847F-4FT is a crossbar device carrying a 3-hour UL fire rating and is offered with an RX request to exit switch and in nine finishes from 605 bright brass through 693 black, which matters if you are matching existing hardware across a facility or tying the device into access control.
18) Will a Falcon 1690EO or 1990EO work in place of the Von Duprin 8847F-4FT?
Not on the same opening. The Falcon 1690EO and 1990EO are both Grade 1 exit only concealed vertical rod devices for 1-3/4 inch doors, but both are narrow stile, while the 8847F-4FT is a wide stile device. The Falcon 24-C is likewise a Grade 1 narrow stile exit only concealed vertical rod device. If your door is a wide stile metal leaf, stay with a wide stile device; the narrow stile Falcons are sized for a different stile face.
19) What looks like a concealed vertical rod exit device but will not latch the door?
The Falcon 1491DT is a dummy trim narrow stile concealed vertical rod device with a 9970 pull - it has the appearance of an exit device but is dummy function, so it provides no latching. It is used on the inactive leaf or a pull-only side. If you need the leaf to actually latch top and bottom on a fire-rated metal door pair, the 8847F-4FT is the working device, with a 3/4 inch latch throw and a 39-13/16 inch device centerline.
20) What finishes does the Von Duprin 8847F come in?
Nine: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome, 626 satin chrome, 643E aged bronze and 693 black. That range makes it straightforward to match devices already hung on other openings in the same building.
21) Is the 8847F heavy duty enough for a school or hospital corridor?
It's certified to ANSI/BHMA A156.3, 2008 Grade 1, the top commercial durability level for exit devices, and is a commercial-only device. Typical applications are offices, schools, healthcare, retail, industrial and warehouse, government buildings and multi-tenant residential. For abuse-heavy traffic, specify the RCB reinforced crossbar.
22) Is there a wide stile concealed vertical rod alternative to the Von Duprin 8847F-4FT from BEST?
Yes. The BEST Precision 2801 Series is a wide stile concealed vertical rod exit device, matching the 8847F-4FT on stile type. Within the same BEST family, the 2701 Series is the wide stile reversible version built for wood doors, which the 8847F-4FT does not cover since it is a metal door device. Confirm the fire rating requirement of your opening before choosing, since the 8847F-4FT carries a 3-hour UL listing.
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Does the Von Duprin 8847EO-F US26D-4 come with a warranty?
Absolutely. The Von Duprin 8847EO-F US26D-4 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 8847EO-F US26D-4?
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