Von Duprin 8847F-3FT Fire Rate...
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Von Duprin 8847F-3FT Fire Rated Concealed Vertical Rod Exit Device Wide Stile 36" Less Dogging

Von Duprin 8847F-3FT Fire Rated Concealed Vertical Rod Exit Device Wide Stile 36" Less Dogging

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

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$3,232.63
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Von Duprin 8847F-3FT Fire Rated Concealed Vertical Rod Exit Device Wide Stile 36" Less Dogging

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

The Von Duprin 8847F-3FT is a fire-rated concealed vertical rod exit device engineered for 8'x8' (2438 mm x 2438 mm) double metal doors requiring dependable, code-compliant egress. Designed for wide stile applications, this 36" crossbar device accommodates door stiles as narrow as 4-3/4" (121 mm) and features a 3/4" latch throw with a 1-3/4" door thickness compatibility. Certified to ANSI/BHMA A156.3 2008 Grade 1 and UL listed for 3-hour fire rating under ANSI/UL 10C, this device delivers the reliability and compliance demanded by commercial facilities. The Less Dogging configuration and non-handed design simplify specification and installation across a wide range of openings.

Professional Features & Benefits

  • Fire-Rated Performance: UL listed for 3-hour fire rating per ANSI/UL 10C and CAN/ULC-S104, ensuring compliance with fire egress requirements on double metal door applications.
  • Wide Stile Compatibility: Fits door stiles as narrow as 4-3/4" (121 mm), making it suitable for a broad range of wide stile commercial door configurations.
  • 36" Crossbar Size: Available in 3' length and field sizeable for single and double door applications, providing installation flexibility across varying opening widths.
  • 3/4" Latch Throw: Provides secure latching engagement with a 3/4" latch throw for reliable door retention in high-traffic commercial environments.
  • 1-3/4" Door Thickness: Engineered for standard commercial door thickness of 1-3/4", ensuring proper fit and function without additional modification.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2008 Grade 1 standards as well as ANSI/UL 305 and CAN/ULC-S132 for verified commercial-grade performance and durability.
  • Non-Handed Design: Non-handed configuration eliminates handing concerns during specification and installation, reducing errors and simplifying inventory management.
  • Less Dogging Configuration: Supplied without dogging hardware, appropriate for fire-rated openings where dogging is not permitted per code requirements.
  • Concealed Vertical Rod (47 Series) Device Type: Concealed rod design provides a clean aesthetic while delivering reliable top and bottom latching for double door applications.
  • Expandable Options: Compatible with E8875 electrified option for access control or fire alarm integration, RX monitoring switch, and KN knurling for tactile hazard indication on crossbars.
  • All Mounting Fasteners Included: Ships complete with all necessary mounting fasteners for straightforward installation.

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: 36"
  • 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
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Von Duprin Quality?

Von Duprin concealed vertical rod exit devices are engineered to meet the most demanding commercial egress requirements, with ANSI/BHMA A156.3 2008 Grade 1 certification and UL listing for 3-hour fire-rated performance under ANSI/UL 10C and CAN/ULC-S104. The 88 Series wide stile crossbar design accommodates door stiles as narrow as 4-3/4" (121 mm) and ships complete with all necessary mounting fasteners for professional installation. Trusted across commercial, institutional, and industrial applications, Von Duprin exit devices deliver the code compliance and long-term reliability that facility managers and security professionals depend on.

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:
36"
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-3 – Frequently Asked Questions

1) Will the Von Duprin 8847F concealed vertical rod device fit my door stiles?
The 8847F-3FT is a wide stile device and fits stiles as narrow as 4-3/4 inches. Anything tighter than that is a narrow stile opening and needs a narrow stile device instead, such as the Corbin Russwin ED4800 or a Falcon 24-C. Door thickness is 1-3/4 inches, the standard commercial hollow metal thickness.
2) Why does the 8847F come Less Dogging, and can I add dogging to it?
Fire rated exit devices can't be dogged, because the latches have to stay engaged to keep the opening closed and latched in a fire. The 8847F ships Less Dogging for that reason. If you want a mechanically dogged device for a non-fire opening so the door can be pushed free during business hours, you need a non-fire rated CVR, for instance the Adams Rite 8500 Series or the DORMA 9100.
3) What fire rating and grade does the Von Duprin 8847F carry?
3-hour fire rating, UL listed under ANSI/UL 10C and CAN/ULC-S104, and certified to ANSI/BHMA A156.3 2008 Grade 1 along with ANSI/UL 305 and CAN/ULC-S132 panic standards. That covers both the fire door assembly requirement and the panic hardware requirement on the same opening, which is what a 3-hour rated stair or corridor pair usually calls for.
4) Does a concealed vertical rod device like the 8847F work on a pair of doors without a mullion?
Yes. A concealed vertical rod device latches at the head and at the threshold rather than into a strike on the jamb, so a pair of doors can be secured with no center mullion and the full clear opening stays usable. The 8847F is built for 8 ft by 8 ft double metal door openings. If you'd rather keep a mullion and use rim devices, that's a different device type entirely.
5) What outside trim options can I order with the Von Duprin 8847F?
Five trim functions: EO exit only with no outside operation, L lever, L-BE lever with blank escutcheon, TL thumb turn, and TL-BE thumb turn with blank escutcheon. If you choose a lever function you also pick the lever style, 06 (default), 01, 02, 03, 07 or 17. Exit only is the common pick on a stair discharge or a rear pair where nobody needs to come back in.
6) Will the 8847F latch into my existing top and bottom strikes?
Latch throw is 3/4 inch at top and bottom. On a retrofit into an existing prep, that's what decides engagement, so confirm your head and threshold strikes give 3/4 inch of pocket and that the door already has concealed rod prep in the stile. Device centerline is 39-13/16 inches, which is where the crossbar lands on the door.
7) What are the closest alternatives to the Von Duprin 8847F fire rated concealed vertical rod device?
Staying fire rated and wide stile, the Adams Rite 3600 Series is a Grade 1 fire rated CVR for hollow metal doors, and the Sargent 12-MD8613 is a Grade 1 fire rated wide stile CVR in classroom function. The Adams Rite 3900 Series is also fire rated but at a 1-1/2 hour rating, so it won't cover a 3-hour opening the way the 8847F does. Corbin Russwin ED5800 is a Grade 1 wide stile CVR for 1-3/4 inch doors if you're matching an existing Corbin building standard.
8) Which concealed vertical rod devices should I avoid if my opening is fire rated?
Anything not fire listed. The Adams Rite 8500 and 8600 Series, the DORMA 9100 and the DORMA 9600BB are all Grade 1 concealed vertical rod devices but carry no fire rating, so they cannot go on a labeled door. For a 3-hour labeled metal pair you want a listed device like the 8847F, which is UL listed for 3-hour under ANSI/UL 10C.
9) The door is not fire rated and I want dogging. What should I use instead of the Von Duprin 8847F?
The 8847F-3FT is supplied less dogging, which is correct for fire-rated openings where dogging is not permitted. On a non-rated wide stile opening, the Adams Rite 8500 Series is a non-fire-rated Grade 1 wide stile concealed vertical rod device, and the DORMA 9100 Series is a non-fire-rated Grade 1 heavy duty wide stile CVR with a pushpad instead of a crossbar and a 1-3/4 inch to 2-1/4 inch door thickness range. The Sargent MD8613F-LTRIM is a Grade 1 heavy duty CVR supplied with hex dogging and lever trim.
10) Do I have to specify handing on the Von Duprin 8847F?
The device itself is non-handed, so the chassis doesn't change. You do still pick a handing option when ordering, RHR or LHR, which sets up the trim and latching side. Nothing about the crossbar or rod assembly needs to be handed at specification time.
11) Can the 8847F be tied into an access control or alarm system?
Yes. An RX request-to-exit switch is orderable directly on the device, which signals the panel when the crossbar is pushed so you don't get a forced-door alarm on legitimate egress. The device is also compatible with the E8875 electrified option for access control or fire alarm integration.
12) Is the 36 inch 8847F only for 36 inch doors?
The 3 ft crossbar is field sizeable and covers both single and double door applications, so it can be cut down for narrower leaves rather than ordering a device per door width. Crossbar style choices are standard, RCB reinforced, or KN knurled.
13) What else do I need to buy to install the 8847F?
All necessary mounting fasteners ship with the device. What is not in the box is the door itself being prepped for concealed rods, plus the head and threshold strikes if the opening has never carried a CVR device. Trim is part of the device order, chosen through the trim function and lever style options.
14) Is a crossbar exit device or a push pad better for my opening?
The 8847F uses a crossbar, which is the traditional Von Duprin look and what most buildings with existing 88 Series hardware will want for consistency across their openings. If your standard is a push pad instead, the wide stile push pad CVRs include the DORMA 9100 and the CRL Jackson 1285. Function on the opening is the same; it's a touchpoint and appearance decision, plus matching what's already installed on the rest of the building.
15) What wide stile concealed vertical rod device accepts trim the way the Von Duprin 8847F does?
The Corbin Russwin ED5800 is a Grade 1 wide stile concealed vertical rod device rated for 1-3/4 inch doors and offered exit only or accepting trim, and the BEST Precision 2801 Series is a wide stile CVR device. The 8847F-3FT is also built for 1-3/4 inch doors and is non-handed, with lever trim offered in 01, 02, 03, 06, 07, and 17 lever styles.
16) My opening only needs a 1-1/2 hour fire rating, not 3 hour. What concealed vertical rod device covers that?
The Adams Rite 3900 Series is a fire-rated Grade 1 wide stile concealed vertical rod exit device carrying a 1-1/2 hour rating. The Von Duprin 8847F-3FT is UL listed to 3 hours under ANSI/UL 10C, so it also satisfies a 1-1/2 hour opening. Match whichever device you choose to the door and frame label, since the assembly rating governs.
17) What is a simpler exit only concealed vertical rod device if I do not need lever or thumb turn trim?
The 8847F-3FT is offered in EO exit only as well as lever, lever with blank escutcheon, thumb turn, and thumb turn with blank escutcheon. If you only ever need exit only, the BEST Precision 2601 Series is a non-handed exit only CVR device in narrow stile, the CRL Jackson 1085 Series is a 48 inch non-handed exit only CVR in wide stile, and the Falcon 24-C is a Grade 1 36 inch narrow stile exit only CVR. Note the stile difference on the narrow stile options.
18) Is the Falcon 1491DT a substitute for the Von Duprin 8847F on the inactive leaf of a pair?
It is not an equivalent. The Falcon 1491DT is a dummy trim narrow stile device with a 9970 pull at 42 inches, meaning it has no latching function. The 8847F-3FT is a Grade 1 fire-rated latching device with a 3/4 inch latch throw. Use a dummy only where no latching or egress function is required on that leaf.
19) I need a 48 inch concealed vertical rod device rather than 36 inch. What are my options?
The 8847F-3FT is a 36 inch crossbar device. For a wider opening, the CRL Jackson 1085 Series is a 48 inch non-handed wide stile concealed vertical rod panic device in exit only, and the Falcon 1990EO is a 44 inch Grade 1 narrow stile exit only CVR. Neither is a crossbar-and-trim match for the Von Duprin, so verify function and stile against your door.
20) What is the knurled crossbar option for on an exit device?
KN knurling puts a textured surface on the crossbar as a tactile hazard warning, which some jurisdictions require on doors leading into hazardous areas such as mechanical, electrical, or chemical storage rooms. On the 8847F it's a crossbar option alongside the standard bar and the RCB reinforced bar, the latter being the pick for abusive high-traffic openings.
21) What finishes does the Von Duprin 88 Series 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. For matching existing openings in a building, 626 satin chrome is the usual commercial standard and 613 or 643E are the darker architectural picks.
22) If I need a request to exit switch on a concealed vertical rod device, does the Von Duprin 8847F handle that or should I look elsewhere?
The 8847F-3FT is offered with an RX request to exit switch built into the ordering options, along with E8875 electrification and KN knurling. Among the comparable concealed vertical rod devices, the Falcon 1690EO and 24-C are catalogued as exit only mechanical devices and the Adams Rite 8500 as a mechanical wide stile CVR, so an access control tie-in on those would need separate confirmation.
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Does the Von Duprin 8847EO-F US26D-3 come with a warranty?
Absolutely. The Von Duprin 8847EO-F US26D-3 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-3?
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