Von Duprin 8875F-4FT Fire Rate...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,164.00
$2,710.84
Von Duprin 8875F-4FT Fire Rated Wide Stile Crossbar Mortise Exit Device, Less Dogging, 48"

Von Duprin 8875F-4FT Fire Rated Wide Stile Crossbar Mortise Exit Device, Less Dogging, 48"

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Model: 8875EO-F US26D-4
$3,164.00
$2,710.84
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$3,164.00
$2,710.84
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Von Duprin 8875F-4FT Fire Rated Wide Stile Crossbar Mortise Exit Device, Less Dogging, 48"

Commercial-Grade Fire Rated Mortise Exit Device for Wide Stile Applications

The Von Duprin 8875F-4FT is a fire rated, wide stile crossbar mortise exit device from the trusted 88 Series, engineered for demanding commercial applications on single or double doors. Sized at 48" (4 ft) and designed for wide stile doors, this device fits stock hollow metal doors with 86 cutouts and accommodates door stiles as narrow as 4-3/4" (121 mm). The integrated 7500 Mortise Lock features a 3/4" (19 mm) anti-friction latch bolt that is field reversible without removing the lock from the door, and a non-handed auxiliary bolt for deadlocking. Certified to ANSI/BHMA A156.3, 2008 Grade 1 and listed under ANSI/UL 10C for fire rated installations, this device delivers code-compliant, reliable egress performance.

Professional Features & Benefits

  • Fire Rated Compliance: Listed under ANSI/UL 10C and CAN/ULC-S104 for fire rated installations, ensuring code-compliant egress in fire-rated door assemblies.
  • 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.
  • Wide Stile Compatibility: Designed as a wide stile (88 Series) device accommodating door stiles as narrow as 4-3/4" (121 mm), fitting stock hollow metal doors with 86 cutouts.
  • 48" Crossbar Length: Available in a 4 ft (48") length that is field sizeable for single and double door applications, providing installation flexibility.
  • Field-Reversible Latch Bolt: The 3/4" (19 mm) anti-friction latch bolt is field reversible without removing the lock from the door, simplifying installation and service.
  • Non-Handed Auxiliary Bolt: Includes a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel, reducing inventory requirements and easing installation.
  • Less Dogging Configuration: Supplied without dogging hardware, suitable for fire rated door applications where dogging is not permitted by code.
  • Electrification & Monitoring Options: Compatible with E8875 electric locking/unlocking option for pairing with access control, fire alarm, or remote switching systems; RX switch option available for door monitoring.
  • Knurling Option Available: KN option provides tactile warning on crossbars to indicate doors leading to hazardous areas such as stairs, loading platforms, or boiler rooms.
  • All Mounting Fasteners Included: All necessary mounting fasteners are included for a complete 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 - Mortise
  • Subcategory: Mortise Exit Devices
  • Latch Throw: 3/4"
  • Product Type: Exit Devices - Mortise
  • 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
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Von Duprin Quality?

Von Duprin 88 Series mortise exit devices are engineered to meet the most rigorous commercial standards, holding 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 8875F-4FT features a field-reversible 3/4" anti-friction latch bolt, non-handed auxiliary bolt, and a 48" wide stile crossbar sized for demanding single and double door applications. Trusted by commercial facility professionals, Von Duprin exit devices deliver dependable, code-compliant egress performance where reliability is essential.

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 - Mortise
Subcategory:
Mortise Exit Devices
Latch Throw:
3/4"
Product Type:
Exit Devices - Mortise
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 8875EO-F US26D-4 – Frequently Asked Questions

1) Why does this Von Duprin 8875F come less dogging?
Because it is a fire rated device. Mechanical dogging holds the latch retracted, which code does not permit on a fire rated door assembly, so the 8875F is supplied in a less dogging configuration. If you want to dog a door open during business hours, that has to be a non-fire-rated opening and a non-fire device, such as the Adams Rite 8300 Series life-safety wide stile mortise device.
2) Is this Von Duprin exit device approved for a fire rated door, and what standards does it hold?
Yes. The 8875F is listed under ANSI/UL 10C and CAN/ULC-S104 for fire rated openings, and it is certified to ANSI/BHMA A156.3, 2008 Grade 1 along with ANSI/UL 305 and CAN/ULC-S132 as a panic device. That combination is what an institutional or MRO spec usually calls for on a rated stair or corridor door.
3) Do I have to order the 8875F handed?
The device itself is non-handed and the 3/4 inch anti-friction latch bolt is field reversible without pulling the lock out of the door, and the auxiliary deadlocking bolt is non-handed too. You still select RHR or LHR when ordering so it arrives set up correctly, but a mis-specified hand is correctable in the field rather than a return.
4) Will a 48 inch crossbar exit device work on a 36 inch door?
Yes. The 48 inch (4 ft) crossbar is field sizeable, so it is cut down to the leaf width on single doors and on each leaf of a pair. Device centerline mounts at 39-13/16 inches off the floor. If you would rather not cut, a 36 inch mortise device such as the Falcon 25-M-EO in the 3 ft size covers narrower openings out of the box.
5) Can this Von Duprin mortise exit device be tied into access control or monitored?
Yes, two ways. An RX request-to-exit switch can be ordered on the device for monitoring when the crossbar is pushed, and the E8875 electric locking/unlocking option lets outside trim be released or secured from access control, a fire alarm interface, or a remote switch.
6) What is the closest fire rated mortise exit device to the Von Duprin 8875F if I need one that also works on a wood door?
The 8875F-4FT is a Grade 1 fire rated wide stile mortise exit device, but it is not wood door compatible. The Adams Rite 3300 Series is a Grade 1 fire rated wide stile mortise exit device for wood and hollow metal doors, so it covers the wood leaf the 8875F does not. The Corbin Russwin ED5600AL is another Grade 1 wide stile mortise exit device with a 3 hour fire rating and a 1-3/4 inch door thickness, matching the 8875F door thickness.
7) My opening is a narrow stile aluminum door - can I use the Von Duprin 8875F there?
No. The 8875F-4FT is a wide stile device and its crossbar is sized for stiles as narrow as 4-3/4 inches on hollow metal doors. For a narrow stile aluminum leaf, the Adams Rite 8400 Series is a Grade 1 narrow stile mortise exit device built for aluminum doors, though it is not fire rated. If the narrow stile opening needs a night latch function, the Sargent 8304 is a Grade 1 narrow stile mortise exit device in night latch.
8) Which trim functions can I get on the Von Duprin 88 Series mortise device?
Nine trim functions: exit only (EO), knob (K), knob with blank escutcheon (K-BE), lever (L), lever with blank escutcheon (L-BE), night latch (NL), thumb piece (TP), thumb piece with blank escutcheon (TP-BE), and dummy trim (DT). If you pick a lever function you also choose the lever style, 06 (default), 01, 02, 03, 07 or 17. Exit only means no outside operation at all, which is the usual choice on a stair discharge or a rear service door.
9) What crossbar options are there, and what is the knurled crossbar for?
Three: standard, RCB reinforced crossbar for high-abuse traffic, and KN knurled. Knurling is a tactile warning that the door leads somewhere hazardous, stairs, a loading platform, a boiler room, which is what a lot of institutional specs require on those openings.
10) Will the 8875F latch into my existing mortise lock strike?
The integrated 7500 mortise lock throws a 3/4 inch anti-friction latch bolt and includes a non-handed auxiliary bolt that deadlocks it. If the frame is already prepped for a standard mortise lock strike with a 3/4 inch latch, the existing strike pocket generally carries over; the faceplate has an adjustable bevel to suit the door edge.
11) Should I use a mortise exit device or a rim device on my hollow metal door?
A mortise device like the 8875F puts the lock case inside the door edge, so the door has to be prepped for a mortise lock body; the payoff is a concealed lock and a 3/4 inch latch into the frame jamb on a single door or on the active leaf of a pair. A rim device surface mounts and latches to a strike on the frame or a mullion, which is the easier retrofit if the door has no mortise pocket. For a pair of doors latching top and bottom instead of at the jamb, a surface vertical rod device such as the Sargent 1256NB-8710G is the type to look at.
12) What are the alternatives to the Von Duprin 8875F if I need a fire rated Grade 1 wide stile mortise device from another brand?
Two close options in the same class. The Corbin Russwin ED5600AL is a Grade 1, 3 hour fire rated wide stile mortise device for 1-3/4 inch doors, supplied exit only or for use with passage or classroom lever trim sold separately. The Adams Rite 3300 Series is a Grade 1 fire rated wide stile mortise device that also covers wood doors, which the Von Duprin does not. The Detex 30 Series is Grade 1 wide stile and hollow metal only, but exit only device, no outside trim.
13) I need night latch function on a rated hollow metal door. Can I get it on the 88 Series?
Yes, NL night latch is one of the trim functions on the 88 Series mortise device, so you get a key-operated outside release on a fire rated wide stile opening. If your opening is narrow stile instead, the Sargent 8304 is a night latch mortise device for narrow stile, and the Sargent 8904 is a wide stile night latch with 24VAC/DC operation.
14) If the door is not fire rated, is there a simpler wide stile mortise exit device than the 8875F?
Yes. The 8875F-4FT is supplied less dogging because it is a fire rated device. On a non-rated opening, the Adams Rite 8300 Series is a Grade 1 wide stile mortise exit device with no fire rating, and the Falcon 25-M-EO is a Grade 1 wide stile mortise device in exit only function for 1-3/4 inch doors at 36 inches. Both are single-function alternatives where the 8875F offers trim choices from dummy trim through lever, knob, thumb piece and night latch.
15) I only need exit only - no outside trim. What else covers that besides the 8875F?
The 8875F-4FT is available in EO exit only along with its other trim functions. If exit only is all the opening needs, the Detex 30 Series Advantex is a Grade 1 wide stile mortise exit device supplied device only in exit only and, like the 8875F, is not wood door compatible. The BEST Precision 2301 is a mortise exit device in exit only with heavy wrought construction, and the Corbin Russwin ED5600AL ships exit only or ready for passage or classroom lever trim ordered separately.
16) What is the difference between ordering the 8875F in NL night latch and using a Sargent 8904?
Night latch is one of the trim functions the 8875F-4FT is built in, alongside lever, knob, thumb piece and dummy trim, on a Grade 1 fire rated wide stile mortise chassis. The Sargent 8904 is a dedicated Grade 1 wide stile mortise exit device in night latch function with 24VAC/DC operation, so it arrives as an electrified night latch device rather than a function selected on a mechanical device. The 8875F takes electrification through the E8875 electric locking option and an RX request to exit switch.
17) Can I use a Sargent 810 or a Sargent vertical rod device in place of the 8875F?
Neither is a substitute. The Sargent 810 is a dummy pull exit device trim, not a latching device - the 8875F-4FT carries its own dummy trim function on a working mortise chassis with a 3/4 inch latch throw. The Sargent 1256NB-8710G is an 84 inch fire rated surface mount vertical rod device with electric latch retraction and a narrow stile build, which latches top and bottom rather than into a mortise lock at the jamb like the 48 inch wide stile 8875F.
18) Do I need to buy mounting hardware separately with this exit device?
No. All necessary mounting fasteners ship with the 8875F. What you do specify separately is the trim function and, on lever functions, the lever style, plus finish, handing, crossbar type and whether you want the RX switch.
19) What finishes does the Von Duprin 8875F come in for matching other doors in a building?
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. 626 satin chrome is the usual standard on commercial and institutional openings, so that is the one to check the rest of your fleet against.
How fast can I get the Von Duprin 8875EO-F US26D-4 delivered?
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Can I return it if it doesn’t work for me?
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Does the Von Duprin 8875EO-F US26D-4 come with a warranty?
Absolutely. The Von Duprin 8875EO-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 8875EO-F US26D-4?
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