Von Duprin 88F-4FT Fire Rated ...
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$2,709.00
$2,321.01
Von Duprin 88F-4FT Fire Rated Wide Stile Crossbar Rim Exit Device, 4 Ft, Less Dogging

Von Duprin 88F-4FT Fire Rated Wide Stile Crossbar Rim Exit Device, 4 Ft, Less Dogging

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Model: 88EO-F US26D-4
$2,709.00
$2,321.01
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,709.00
$2,321.01
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Von Duprin 88F-4FT Fire Rated Wide Stile Crossbar Rim Exit Device, 4 Ft, Less Dogging

Commercial-Grade Fire Rated Rim Exit Device for Wide Stile Single and Double Door Applications

The Von Duprin 88F-4FT is a fire rated, wide stile crossbar rim exit device engineered for demanding commercial applications on single and double doors with mullion. Designed for 4-foot (48") door widths with a 1-3/4" door thickness, this field-reversible device covers stock hollow metal doors with 86 or 161 cutouts and delivers a 3/4" latch throw for secure latching performance. Certified to ANSI/BHMA A156.3, 2008 Grade 1 and listed under ANSI/UL 10C (fire rated) and ANSI/UL 305, the 88F-4FT meets the most stringent commercial fire and life safety code requirements.

Professional Features & Benefits

  • Fire Rated Certification: Listed under ANSI/UL 10C (fire rated) and CAN/ULC-S104 (fire rated), ensuring full compliance with fire door assembly requirements in commercial and institutional facilities.
  • 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 the highest level of commercial exit device performance.
  • Wide Stile, 4 Ft (48") Coverage: Sized at 48" for wide stile door applications, with a product projection of 4-3/4" and case dimensions of 6" x 1-3/4" x 15/16" (Hinge Stile Case) and 8-1/4" x 2-3/4" x 15/16" (Lock Stile Case).
  • 3/4" Latch Throw: Provides a positive, secure latch engagement for reliable door latching in high-traffic commercial environments.
  • Field Reversible Design: Non-handed configuration allows the device to be field reversed, simplifying installation and reducing inventory requirements for contractors and facility managers.
  • Less Dogging Configuration: Supplied without dogging hardware, making it ideal for fire-rated door assemblies where dogging is not permitted by code.
  • Device Centerline at 39-13/16" from Finished Floor: Ergonomically positioned for ADA-compliant and code-appropriate exit device placement on commercial doors.
  • Accessory & Option Compatibility: Compatible with E8875 electrified option (for access control, fire alarm, or remote switching integration), RX monitoring switch, and KN knurling option for tactile hazard warning on crossbars. Mullions, power transfers, and strikes also available.
  • Mounting Fasteners Included: All necessary mounting fasteners are included for straightforward installation on compatible hollow metal door preparations.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 88 Series
  • Grade: Grade 1
  • Device Centerline from Finished Floor: 39-13/16"
  • Fasteners: All necessary mounting fasteners are included
  • Product Subgroup: Exit Devices - Rim
  • Subcategory: Rim Exit Devices
  • Latch Throw: 3/4"
  • Product Type: Exit Devices - Rim
  • 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
  • Product Dimension: 6" x 1-3/4" x 15/16" (Hinge Stile Case), 8-1/4" x 2-3/4" x 15/16" (Lock Stile Case)
  • Fire Rating: Yes
  • Product Projection: 4-3/4"
  • 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 rim exit devices are engineered to meet the most demanding commercial life safety standards, with the 88F Series earning ANSI/BHMA A156.3, 2008 Grade 1 certification and UL listings under ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132. The field-reversible, non-handed design and included mounting fasteners streamline installation, while the fire rated construction ensures compliance in applications where fire door integrity is critical. Trusted by commercial contractors and facility managers, Von Duprin exit devices deliver dependable performance in high-traffic environments where life safety is paramount.

Manufacturer Resources

Von Duprin 88 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
88 Series
Grade:
Grade 1
Device Centerline from Finished Floor:
39-13/16"
Fasteners:
All necessary mounting fasteners are included
Product Subgroup:
Exit Devices - Rim
Subcategory:
Rim Exit Devices
Latch Throw:
3/4"
Product Type:
Exit Devices - Rim
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
Product Dimension:
6" x 1-3/4" x 15/16" (Hinge Stile Case), 8-1/4" x 2-3/4" x 15/16" (Lock Stile Case)
Fire Rating:
Yes
Product Projection:
4-3/4"
Product Style:
Cross Bars
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 88EO-F US26D-4 – Frequently Asked Questions

1) Is the Von Duprin 88F-4FT approved for a fire rated door opening?
Yes. The 88F-4FT is listed under ANSI/UL 10C and CAN/ULC-S104 for fire doors, and carries ANSI/BHMA A156.3, 2008 Grade 1 along with ANSI/UL 305 and CAN/ULC-S132 for panic hardware. That is why it ships less dogging, since hold-open dogging is not permitted on a fire rated assembly.
2) What door thickness does the 88F-4FT exit device work on?
One thickness only: 1-3/4 inches, the standard commercial hollow metal door. If your leaf is thicker, this is not the device. The Dormakaba 9300 Series wide stile rim device covers 1-3/4 to 2-1/4 inches, though it is not fire rated.
3) Do I have to order the Von Duprin 88F crossbar device handed?
The device itself is non-handed and field reversible, so one part covers either swing and you can carry less on the shelf. You still pick RHR or LHR when ordering so it arrives set correctly, but it can be flipped in the field if the opening turns out to be the other hand.
4) Will the Von Duprin 88F rim device work on a pair of doors?
On a pair, yes, but only with a mullion. It is a rim device, so the latch throws into a strike, not into the frame head and sill. Double door openings need a mullion between the leaves for the strike to land on. Mullions, strikes, and power transfers are available as accessories. If you can't have a mullion in the opening, you need a vertical rod device instead.
5) Will the 88F latch into my existing rim strike?
The 88F throws a 3/4 inch latchbolt, which is the standard Von Duprin rim projection, so it engages a rim strike set for that throw. Check the strike is positioned for a device centerline of 39-13/16 inches off the finished floor, and account for the 4-3/4 inch projection of the device off the door face when you check clearance to a wall or return.
6) Can I use the 88F-4FT on a wood fire door?
No - the 88F-4FT is not rated for wood door applications. Among fire rated rim devices, the Adams Rite 3700 Series is listed as wood door compatible; it is a 30 inch fire rated narrow stile rim exit device with starwheel interlocking, Grade 1. For hollow metal fire doors at 48 inches, the 88F-4FT applies directly, with all mounting fasteners included.
7) My opening is a narrow stile aluminum storefront door - can I use the 88F-4FT there?
No. The 88F-4FT is a wide stile device, and its lock stile case measures 8-1/4 inches by 2-3/4 inches, which will not sit on a narrow stile aluminum rail. For a narrow stile fire rated opening, the Adams Rite 3700 Series is a 30 inch fire rated narrow stile rim exit device with starwheel interlocking, Grade 1, and it is rated for wood doors as well. Non fire rated narrow stile options in the same family include the Adams Rite 8700 and 8800 Series.
8) Is the Corbin Russwin ED3200 a substitute for the Von Duprin 88F-4FT?
They match on form but not on fire rating. The Corbin Russwin ED3000 Series ED3200 is a Grade 1 48 inch crossbar rim exit device for wide stile, 1-3/4 inch non-wood doors - the same crossbar style, size and door thickness as the 88F-4FT. The difference that decides it is fire rating: the ED3200 is not fire rated, while the 88F-4FT is, and is supplied less dogging for fire door assemblies where dogging is not permitted. On a non-rated opening the ED3200 is a direct form match; on a labeled fire door it is not.
9) We need dogging for daytime free egress - the 88F-4FT is less dogging, what else should I look at?
The 88F-4FT is supplied less dogging, which is what a fire rated assembly requires since mechanical dogging is not permitted on a labeled door. If the opening is not fire rated and you want to dog the device open during business hours, the Design Hardware 1000R is a 33 inch heavy duty rim device with hex key dogging, the Design Hardware 2000R is a 33 inch standard duty wide stile rim device with hex key dogging, and the Stanley QED200 Series is a Grade 1 heavy duty narrow stile rim device with hex key dogging. None of those is a fire rated alternative to the 88F.
10) Would an SDC pressure sense bar or switch bar work in place of the 88F-4FT?
They serve a different purpose. The SDC SureExit PSB560 Series 36 inch pressure sense bar and the SDC MSB550 Series 36 inch mechanical switch bar release an electromagnetic lock and fit narrow or wide stile doors, but neither is fire rated. The Von Duprin 88F-4FT is a fire rated Grade 1 mechanical rim latching device with a 3/4 inch latch throw, so it latches the door itself rather than signaling a maglock. On a labeled fire door assembly the latching device is what the code requires.
11) Is a Cal-Royal A9820 48 inch rim device the same class of hardware as the Von Duprin 88F-4FT?
Not the same class. The Cal-Royal A9820 is a 48 inch heavy duty rim exit device, exit only, carrying a Grade 2 rating and not fire rated. The Von Duprin 88F-4FT is ANSI/BHMA Grade 1 and fire rated, for commercial 1-3/4 inch wide stile doors. If the specification on the drawing calls for Grade 1 on a labeled door, the Cal-Royal A9820 and its 36 inch sibling A9800 will not satisfy it.
12) Our doors are 2-1/4 inch thick - can I still order the 88F-4FT?
The 88F-4FT is specified for 1-3/4 inch doors. For thicker leaves, the Adams Rite 8800 Series covers 1-3/4 inch to 2-1/4 inch in narrow stile, the Dormakaba 9300 Series covers 1-3/4 inch to 2-1/4 inch in wide stile, and the Securitron EMB electromechanical exit bar is listed at 2-1/4 inch. None of those three is a fire rated device, so confirm the door label before substituting.
13) What outside trim options can I get with the Von Duprin 88 Series exit device?
Ten trim functions: exit only, dummy trim, night latch, knob, knob with blank escutcheon, knob night latch, lever, lever with blank escutcheon, thumb piece, and thumb piece with blank escutcheon. If you go lever, you also pick the lever style, 06 is the default with 01, 02, 03, 07 and 17 also offered. Exit only means no outside operation at all, which is the usual choice on a stair discharge or a back-of-house exit.
14) Can I tie the 88F exit device into my access control system?
Yes. It takes the E8875 electrified option for access control, fire alarm, or remote switching, and an RX request-to-exit switch can be specified on the order to signal the system when the crossbar is pushed. Power transfers are available to get the wiring from the frame to the door.
15) What else do I need to buy to install the 88F-4FT exit device?
All the mounting fasteners come with the device. What is not in the box is the strike, and on a pair of doors the mullion, plus a power transfer if you are running the electrified or RX option. On stock hollow metal with an 86 or 161 cutout, the device covers the prep.
16) I want a 48 inch crossbar exit device but my opening isn't fire rated. What should I use?
If there is no fire rating on the assembly, the Corbin Russwin ED3200 is a Grade 1 48 inch wide stile crossbar rim device for 1-3/4 inch doors, and the CRL Jackson 1095 Series 48 inch crossbar is another wide stile crossbar option. Neither is fire rated, so keep them off rated openings, but on a non-rated door you can then consider a device with dogging, which the 88F does not have.
17) Why does the Von Duprin 88F-4FT come less dogging, and can I add dogging later?
Less dogging is correct for a fire rated device. Dogging holds the latch retracted so the door pushes free, and that defeats positive latching, which a fire door assembly has to maintain. The 88F is listed under ANSI/UL 10C, so it is built without it. If you need a door that can be held unlatched during business hours, that opening has to be non-rated and you need a different device.
18) What is the difference between the Von Duprin 88F-4FT and the Sargent 12-8810-LTRIM?
Both are fire rated Grade 1 wide stile rim exit devices for non-wood doors. The Sargent 12-8810-LTRIM is an 8800 Series device configured with RX request to exit and MELR, in a dummy function with lever trim. The 88F-4FT is a crossbar style device at 48 inches for 1-3/4 inch doors, non-handed and field reversible, with a 3/4 inch latch throw, and RX is one of the options offered alongside trim functions ranging from exit only through night latch and dummy trim.
19) I want a push pad instead of a crossbar on a 48 inch wide stile door - what are my options?
The 88F-4FT uses a crossbar. If the specification calls for a push pad or push bar on a 48 inch wide stile opening, the Dormakaba 9300 Series is a 48 inch wide stile push style panic rim device, Grade 1 heavy duty, for 1-3/4 inch to 2-1/4 inch doors, exit only. The Sargent 3828 is a Grade 1 reversible standard push bar rim device for 48 inch doors, wide stile, exit only. The CRL Jackson 1295 Series is a non-handed push pad rim panic device for 1-3/4 inch wide stile doors, exit only. None of those three is fire rated, so on a labeled door the crossbar 88F remains the fire rated choice.
20) What should I use if the door needs vertical rod hardware instead of a rim device?
The 88F-4FT is a rim device, latching to a strike on the frame or mullion. If the opening calls for concealed vertical rods instead, the Hager 4501 Series is a 36 inch Grade 1 concealed vertical rod exit device with a wide stile pushpad, and the Hager 4601 Series is a 36 inch Grade 1 concealed vertical rod device in narrow stile. Neither of those is fire rated, so for a labeled opening the fire rated 88F rim device on a mullion is the applicable approach.
21) What is the closest Falcon or Sargent alternative to the Von Duprin 88F-4FT for a 48 inch wide stile opening?
On the Sargent side, the 2828 is a Grade 1 reversible rim exit device for a 48 inch minimum door width in wide stile, exit only, and the 3828 is the Grade 1 reversible standard push bar version for 48 inch doors, also wide stile and exit only. Falcon's Monarch 18 Series is a Grade 1 36 inch rim device. The distinguishing spec on the 88F-4FT is that it is fire rated at Grade 1 in a 48 inch crossbar format with a 3/4 inch latch throw and outside trim options; the Sargent 2828 and 3828 are listed as exit only.
22) What finishes does the Von Duprin 88 Series crossbar device come in to match the rest of my building?
Nine finishes: 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. 626 satin chrome is the usual pick when you're standardizing commercial openings.
23) What is the KN knurled crossbar option for on an exit device?
Knurling is a tactile hazard warning. A textured crossbar tells a person by touch that the door leads somewhere dangerous, which is a code requirement in a lot of jurisdictions for mechanical and electrical rooms. The 88 Series also offers RCB, a reinforced crossbar, for openings that take abuse, alongside the standard bar.
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Does the Von Duprin 88EO-F US26D-4 come with a warranty?
Absolutely. The Von Duprin 88EO-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 88EO-F US26D-4?
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