Von Duprin 98-4FT 4 ft Smooth ...
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Von Duprin 98-4FT 4 ft Smooth Case Wide Stile Rim Exit Device, ANSI/BHMA Grade 1 Certified

Von Duprin 98-4FT 4 ft Smooth Case Wide Stile Rim Exit Device, ANSI/BHMA Grade 1 Certified

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Model: 98EO 4 US26D
From the 98 series Collection
$3,065.80
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Von Duprin 98-4FT 4 ft Smooth Case Wide Stile Rim Exit Device, ANSI/BHMA Grade 1 Certified

Heavy-Duty Wide Stile Panic Exit Hardware for Institutional and Commercial Applications

The Von Duprin 98-4FT is a 4 ft (48") smooth case wide stile rim exit device engineered for demanding institutional and commercial environments including schools, hospitals, and government buildings. Featuring a smooth mechanism case that distinguishes the 98 Series from the grooved-case 99 Series, this non-handed push pad device is certified to ANSI/BHMA A156.3 2014 Grade 1 standards and listed to ANSI/UL 10C (fire-rated configurations) and ANSI/UL 305. The device accommodates door thicknesses of 1-3/4" and is compatible with hollow metal doors featuring 86 or 161 cutouts on single doors, with a 3/4" latch throw and a center case measuring 8" x 2-3/4" x 2-3/8".

Professional Features & Benefits

  • Wide Stile Push Pad Design: Heavy-duty 48" wide stile push pad construction provides reliable, high-cycle performance suited for institutional applications with heavy daily traffic.
  • Smooth Mechanism Case: The 98 Series signature smooth mechanism case offers a refined architectural appearance while maintaining the same heavy-duty performance as the grooved 99 Series counterpart.
  • ANSI/BHMA Grade 1 Certified: Certified to ANSI/BHMA A156.3 2014 Grade 1, the highest industry standard for exit devices, ensuring long-term reliability in high-use environments.
  • Multi-Standard Compliance: Listed to ANSI/UL 10C (fire-rated configurations), ANSI/UL 305, CAN/ULC-S104 (fire-rated configurations), and CAN/ULC-S132 for broad code compliance across applications.
  • Non-Handed Configuration: The rim device is non-handed for straightforward installation, except when SD (special dogging), -2 (Double Cylinder), or SS (signal switch) options are specified.
  • Door Thickness & Fastener Compatibility: Includes fasteners for wood or metal doors 1-3/4" and 2-1/4" thick, accommodating a range of standard commercial door preparations.
  • Field-Configurable Options & Retrofit Kits: Supports a broad range of field-configurable options including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (Request to Exit RX, Latchbolt Monitoring LX) for integration with access control systems.
  • ADA & Delayed Egress Upgrade Paths: Upgradeable with 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) and CX CHEXIT (delayed egress meeting NFPA and IBC requirements, 15-second delay with nuisance alarm).
  • Extensive Device Type Availability: The 98/99 Series platform supports rim, surface-mounted vertical rod (27), concealed vertical rod (47, 48), concealed vertical cable (49, 52), wood door concealed vertical rod (47WDC), wood door concealed vertical cable (50WDC), 3-point latching (57), and mortise lock (75) configurations.
  • Comprehensive Trim & Function Options: Compatible with 990 pull trim and 996 lever or knob trim in Classroom, Storeroom, Dummy, Passage, and Exit Only functions for versatile access control configurations.

Technical Specifications

  • Series: 98 & 99 Series
  • Grade: Grade 1
  • Fasteners: Included for wood or metal doors 1-3/4" and 2-1/4" thick
  • Product Group: Exit Devices and Trim
  • Product Subgroup: Exit Devices - Rim
  • Product Type: Exit Devices - Rim
  • Subcategory: Rim Exit Devices
  • Latch Throw: 3/4"
  • Commercial/Residential: Commercial
  • Stile Type: Wide Stile
  • Center Case Dimensions: 8" x 2-3/4" x 2-3/8"
  • Wood Door Compatible: No
  • MAP Policy: Yes
  • Product Model: 98-4ft
  • Collection: 98 Series
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4"
  • Product Size: 48"
  • Dogging Configuration: Hex Key Dogging
  • Product Projection: 3-13/16"
  • Product Style: Push Pads
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

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

Delayed Egress Compliance

The Von Duprin 98-4FT is upgradeable with the CX CHEXIT option, which meets NFPA and IBC requirements for delayed egress applications. This upgrade keeps doors secure for 15 seconds after a request to exit while a nuisance alarm sounds, providing code-compliant delayed egress functionality for facilities requiring controlled exit management.

Why Choose Von Duprin Quality?

Von Duprin rim exit device products deliver professional-grade reliability with heavy-duty wide stile push pad construction certified to ANSI/BHMA A156.3 2014 Grade 1 and listed to ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for comprehensive code compliance. The 98 Series is purpose-built for high-use and high-abuse institutional environments including schools, hospitals, and government facilities, with a broad ecosystem of field-configurable options and retrofit kits to keep pace with evolving technology. Engineered for demanding commercial applications where dependable panic exit performance is essential.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Series:
98 & 99 Series
Grade:
Grade 1
Fasteners:
Included for wood or metal doors 1-3/4" and 2-1/4" thick
Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Devices - Rim
Product Type:
Exit Devices - Rim
Subcategory:
Rim Exit Devices
Latch Throw:
3/4"
Commercial/Residential:
Commercial
Stile Type:
Wide Stile
Center Case Dimensions:
8" x 2-3/4" x 2-3/8"
Wood Door Compatible:
No
MAP Policy:
Yes
Product Model:
98-4ft
Collection:
98 series
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
48"
Dogging Configuration:
Hex Key Dogging
Product Projection:
3-13/16"
Product Style:
Push Pads
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 98EO 4 US26D – Frequently Asked Questions

1) Will the Von Duprin 98-4FT fit a 1-3/4 inch hollow metal door with a 161 prep?
Yes on both counts. The 98-4FT is built for 1-3/4 inch doors, and it mounts to hollow metal doors with 86 or 161 cutouts on single door openings. Fasteners come in the box for wood or metal doors 1-3/4 inch and 2-1/4 inch thick, so a thicker metal door is covered on hardware even though the device itself is specified at 1-3/4 inch. Allow 3-13/16 inch of projection off the door face when you check swing clearance against a wall or an adjacent leaf.
2) What size door does the 48 inch Von Duprin 98 cover, and is it wide stile only?
The 98-4FT is a 48 inch device with a wide stile push pad, meant for doors with enough stile face to carry a full width case. On an aluminum storefront or any narrow stile leaf it will not land. For narrow stile openings, the Corbin Russwin ED4200 and the Falcon 19-R are narrow stile Grade 1 rim devices for 1-3/4 inch doors. Center case measures 8 x 2-3/4 x 2-3/8 inches.
3) Do I have to specify handing on a Von Duprin 98 rim device?
The device itself is non-handed, but the order form asks for RHR or LHR because trim and certain options are handed. Handing does become mandatory to the device when you spec SD special center case dogging, -2 double cylinder, or SS signal switch. For a straight exit only pushpad with no trim, the device reverses either way.
4) Will the 3/4 inch latch on a Von Duprin 98 catch my existing rim strike?
The 98 throws a 3/4 inch latchbolt into a surface mounted rim strike on the frame stop. Because it is a rim device, all the latching happens at the strike jamb, so what matters is that your existing strike is a rim type with a lip depth that clears a 3/4 inch throw. If the frame has no rim strike prep, the strike mounts to the stop face and needs its own holes.
5) Should I use a rim exit device or a vertical rod on a pair of doors?
A rim device like the 98-4FT latches into a strike on the frame or on a removable mullion, so on a pair it needs that mullion between the leaves. If you cannot have a mullion in the clear opening, you want vertical rod instead. The same 98/99 platform covers surface vertical rod (27), concealed vertical rod (47, 48), concealed vertical cable (49, 52), three point latching (57), and a mortise lock version (75), so you can keep one look and one parts family across a building while changing latching type per opening.
6) Is the Von Duprin 98 Grade 1 and fire rated?
Certified to ANSI/BHMA A156.3 2014 Grade 1, and listed to ANSI/UL 10C for fire rated configurations plus ANSI/UL 305 for panic. Canadian listings are CAN/ULC-S104 for fire rated configurations and CAN/ULC-S132. Note that fire rated is a configuration, not the whole family: a fire rated opening rules out dogging, so hex key dogging standard becomes LD less dogging on that order.
7) How do I keep the doors unlocked during school hours with a Von Duprin 98?
Hex key dogging is standard, which holds the pushpad depressed and the latch retracted so the door pushes free. If you do not want maintenance carrying a hex key, order CD cylinder dogging so it works off a key cylinder, or CDSI and HDSI which add a security indicator so staff can see at a glance whether the device is dogged. DI and CI dogging indicators are also available, and LD drops dogging entirely for fire rated openings.
8) Can a Von Duprin 98 be tied into our access control system?
Yes, and there is more than one way in. QEL quiet electric latch retraction or EL electric latch retraction pulls the latch back on a signal from the card reader so the door goes push-pull remotely. For monitoring only, RX request to exit tells the panel someone pushed the bar and LX latchbolt monitoring tells it whether the latch is actually thrown; LX-RX gives both. Variants include WP-RX for wet locations, RX-LC low current, and RX-2 for two independent RX outputs.
9) We need 5 lb operating force for ADA on our exit doors. Does the Von Duprin 98 meet that?
Only with the AX accessible device option specified. AX is certified to the 5 lb force requirement of 2010 ADA chapters 404.2.7 and 30934 and the 2013 California Building Code chapter 11B-309.4. It is an ordered option, so it has to be called out at purchase, not added later on a whim.
10) What trim do I order with a Von Duprin 98 to get a classroom or storeroom function on the outside?
Outside function comes from the trim, not the device. The 98 takes 990 pull trim and 996 lever or knob trim in Classroom, Storeroom, Dummy, Passage, and Exit Only functions. On the order you pick a trim function such as L lever, K knob, TP thumbpiece, NL night latch, EO exit only, or the blank escutcheon and dummy variants, and if you choose a lever you also pick the lever design from 01, 02, 03, 05, 06, 07, 17, or 18.
11) Can I put a Von Duprin 98 on a wood door, and what should I use if not?
The Von Duprin 98-4FT is a metal door device and is not carried as wood door compatible; the description calls out compatibility with hollow metal doors using 86 or 161 cutouts on single doors. If the opening is a wood door, the Adams Rite 3700 Series 30 inch fire-rated narrow stile rim device and the Adams Rite 8700 Series 30 inch narrow stile rim device are both Grade 1 and both listed as wood door compatible. Both are narrow stile, so confirm the stile width on your wood door before ordering.
12) Is an SDC pressure sense bar or switch bar a substitute for a Von Duprin 98 rim exit device?
They are not interchangeable. The Von Duprin 98-4FT is a mechanical rim exit device with a 3/4 inch latch throw that physically latches the door. The SDC PSB560 SureExit is a 36 inch pressure sense bar with tri-failsafe technology and the SDC MSB550 is a 36 inch mechanical switch bar with electromagnetic lock release; both fit narrow or wide stile doors but they signal a release rather than carry a latch of their own, so they depend on a separate maglock or electric lock to secure the opening. If your opening needs the door to latch mechanically, the 98 is the device type you want.
13) What is the closest equivalent to a Von Duprin 98-4FT for a 48 inch opening if I am specifying a different manufacturer?
The Von Duprin 98-4FT is a 48 inch wide stile rim exit device with a push pad, non-handed, ANSI/BHMA Grade 1. The closest peers at the same size and stile are the Dormakaba DORMA 9300, a 48 inch wide stile Grade 1 rim panic device rated heavy duty for doors 1-3/4 inch to 2-1/4 inch thick; the Corbin Russwin ED3200, a Grade 1 48 inch wide stile rim device for 1-3/4 inch doors, though it uses a crossbar rather than a push pad; and the Sargent 3828, a Grade 1 reversible standard push bar wide stile rim device for 48 inch doors. If the push pad actuation matters to you, the Dormakaba 9300 and Sargent 3828 track the 98 more closely than the crossbar ED3200 does.
14) The 98-4FT will not fit my aluminum storefront door - what rim exit device should I use instead?
The Von Duprin 98-4FT is a wide stile device with a center case measuring 8 inches by 2-3/4 inches by 2-3/8 inches, which is more case than a narrow aluminum stile will take. For narrow stile openings the peer set includes the Adams Rite 8800 Series 30 inch narrow stile rim device, Grade 1, for doors 1-3/4 inch to 2-1/4 inch thick; the Corbin Russwin ED4200, a Grade 1 36 inch narrow stile rim device for 1-3/4 inch doors that accepts trim; the Falcon 19-R, a Grade 1 36 inch narrow stile exit only device for 1-3/4 inch doors; and the Detex 40 Advantex, an extra heavy duty Grade 1 narrow stile rim device. Measure the stile face before choosing between them.
15) I need a fire rated exit device on a labeled cross-corridor door - is a Von Duprin 98 the right choice or should I look elsewhere?
The Von Duprin 98-4FT is listed to ANSI/UL 10C and CAN/ULC-S104 in fire-rated configurations, so a fire label application is within its scope when the fire-rated configuration is specified. Peers carried as fire rated out of the box include the Marks USA M9900F in both 36 inch and 48 inch exit only versions with a panic protector end cap, the Dexter ED1000 Grade 1 fire rated rim device, the Orca OED85 36 inch fire rated rim device, and the Sargent 12-8810 fire rated wide stile rim device. Note that a fire rated exit device must not be dogged down, so the 98-4FT hex key dogging that comes standard is a mechanical-door feature, not a fire-door one.
16) The Von Duprin 98 is a rim device - what do I use if my pair of doors has no mullion?
The Von Duprin 98-4FT is a rim device, which latches to a strike on the frame or on a mullion. Where a pair of doors has to open clear with no mullion, a vertical rod device is the type to look at 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. Choose between them on the stile width of your doors.
17) Cal-Royal calls its A9820 a Grade 1 heavy duty 48 inch exit device - is that the same certification as the Von Duprin 98-4FT?
They are not carried the same way. The Von Duprin 98-4FT is certified to ANSI/BHMA A156.3 2014 Grade 1. The Cal-Royal A9820 is a 48 inch exit only rim device carried at Grade 2 with a heavy duty rating, and the Cal-Royal A9800 36 inch device is carried the same way. Where a submittal has to show ANSI/BHMA Grade 1 on the exit device line, that is the value your reviewer will read, so confirm the certification level rather than the product name.
18) What is the difference between the Von Duprin 98 and the 99?
Case appearance. The 98 has a smooth mechanism case and the 99 has a grooved one. Mechanically they are the same platform, same Grade 1 certification, same device type range and options. Pick the 98 when the architect wants the cleaner face, and match whichever one is already on the other openings in the building so the run of doors looks consistent.
19) Can I get a delayed egress exit device for a memory care or retail loss prevention door?
The CX CHEXIT option turns the 98 into a delayed egress device meeting NFPA and IBC requirements. Push the bar and the door stays secure for 15 seconds while a nuisance alarm sounds, then releases. If you only need an audible local alarm without the delay, the ALK alarm exit kit, RX-ALK, and LXRX-ALK options cover that instead.
20) Does the Von Duprin 98 come in black or dark bronze to match our storefront?
Twelve finishes are offered: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 619 satin nickel, 625 bright chrome, 626 satin chrome, 628 aluminum, 630 satin stainless steel, 643E aged bronze, 710 dark bronze anodized, and 711 flat black. For a fleet of doors, 630 satin stainless and 626 satin chrome are the usual institutional picks; 710 and 711 are the ones that match dark storefront framing.
21) Is there a quieter version of the Von Duprin 98 for a library or hospital corridor?
QM quiet mechanical is an option on the 98, and if the door is electrified, QEL quiet electric latch retraction is the low noise version of electric latch retraction. Both are ordered options rather than field kits. Push bar choices also matter for these buildings: BR braille pushbar, KN knurled bar (the tactile warning for a hazardous area), SG safety glow, and RSS emergency exit bar are all available in place of the standard bar.
22) What is a comparable 48 inch wide stile rim exit device if I do not want Von Duprin?
For a Grade 1 wide stile rim device at the same 48 inch width, the Corbin Russwin ED3200 (ED3000 Series, crossbar, 1-3/4 inch doors) and the DORMA 9300 Series 48 inch exit only device (1-3/4 to 2-1/4 inch doors) are the direct peers. The Sargent 3828 and 2828 are Grade 1 reversible wide stile rim devices for 48 inch doors. If a fire rated 48 inch device is the requirement, the Marks USA M9900F 48 inch is rim, fire rated, exit only. Note the crossbar devices are a different look from the 98 push pad.
23) Is there a lower cost alternative to a Von Duprin 98 for a low traffic back door?
The 98 is Grade 1 and built for high abuse institutional traffic, which is more device than a low use service door needs. Cal-Royal offers Grade 2 heavy duty rim devices, the 5500 at 48 inch with a push bar and the 5000 at 36 inch with a touch bar. Design Hardware's 2000R is a standard duty 33 inch rim device with hex key dogging. Keep the Grade 1 device where the door cycles all day or where the spec calls for it.
24) Can I standardize a whole school on Von Duprin 98 across single doors, pairs, and different widths?
That is what the 98 platform is set up for. One case style, one finish, and one trim family across the building, with the latching type changing per opening: rim on singles and mullion pairs, 27 surface vertical rod or 47 and 48 concealed rod on pairs without a mullion, 57 three point, 75 mortise. The 4 foot 98-4FT covers 48 inch leaves; the same series runs in other lengths for narrower doors. Doors on card access get QEL or RX and LX, and the rest stay mechanical with hex key dogging.
25) Is there a simpler exit only rim device I can use where I do not need trim or access control?
The Von Duprin 98-4FT is built for openings that may later take 990 pull trim or 996 lever or knob trim and electronic options like RX, LX, and QEL latch retraction. Where the opening is push-to-exit only and none of that is planned, simpler exit only peers include the Dexter ED1000 in a 4FT Grade 1 rim version, the Corbin Russwin ED2200 Grade 1 36 inch wide stile exit only device, the Imperial USA ED-501 Grade 1 36 inch wide stile rim panic device in exit only, and the TownSteel ED1100 36 inch heavy duty Grade 1 wide stile panic rim device. Those give you the panic function without the option ecosystem behind it.
26) What is the difference between a Von Duprin 98-4FT and the Cal-Royal 5500 for a 48 inch door?
Both cover a 48 inch opening with a wide push bar, but they sit at different certification levels. The Von Duprin 98-4FT is certified to ANSI/BHMA A156.3 2014 Grade 1. The Cal-Royal 5500 is a 48 inch wide rim exit device with a push bar carried at Grade 2, heavy duty. If your specification or facility standard calls out ANSI/BHMA Grade 1 by name, the 5500 will not satisfy it; if the drawing only calls for a panic device on a moderate-traffic opening, the Grade 2 chassis is the lighter option.
27) I need electric latch retraction on a rim device for access control - how does the Von Duprin 98 QEL compare to a dedicated electrified device?
The Von Duprin 98-4FT is offered with QEL quiet electric latch retraction and EL electric latch retraction as a factory option, alongside RX request to exit and LX latch bolt monitoring switches, so a single Grade 1 mechanical device becomes the access-controlled one. Purpose-built electrified peers include the SDC S6136 Spectra, a 36 inch electrified architectural rim exit device on a 4 inch wide stile for doors 1-3/4 inch to 2 inch thick; the Dormakaba E2103 36 inch electrified rim device with 4908A trim in a classroom function; and the Securitron EMB electromechanical exit bar for 2-1/4 inch doors. The distinction is whether you want electrification added to a standard mechanical platform or a device designed around it.
28) My existing exit device is a crossbar - can I match the look with a Von Duprin 98 or do I need another crossbar device?
The Von Duprin 98-4FT is a push pad device, so it will not visually match a crossbar across a bank of doors. To stay with a crossbar, the Corbin Russwin ED3200 is a Grade 1 48 inch wide stile crossbar rim exit device for 1-3/4 inch doors, and the CRL Jackson 1095 Series is a 48 inch crossbar rim panic exit device in wide stile, exit only. If you are standardizing a facility on push pads, the CRL Jackson 1295 Series is a non-handed push pad rim panic device for 1-3/4 inch doors in wide stile.
29) I need a night latch function on a rim exit device - does the Von Duprin 98 do that or is there a device built for it?
The Von Duprin 98-4FT covers night latch through its trim function options, including NL night latch, NL-OP night latch with optional pull, L-NL lever night latch, and K-NL knob night latch. A peer built around that single function is the Sargent 8504, a Grade 1 narrow stile rim exit device in a night latch function, and the Detex V4003A/03AN is a Grade 1 wide stile rim device with night latch trim. The Von Duprin route lets you pick the trim style; the Sargent 8504 is narrow stile, which matters if your opening is aluminum.
30) For a high-abuse school corridor, how does the Von Duprin 98 compare to the extra heavy duty options?
The Von Duprin 98-4FT is certified to ANSI/BHMA A156.3 2014 Grade 1 and built for high-use, high-abuse institutional environments, with hex key dogging standard so the door can be pushed free during passing periods. Peers carried a step above standard heavy duty are the Detex 10 Advantex, a 36 inch extra heavy duty Grade 1 wide stile rim device, and the Detex 40 Advantex, an extra heavy duty Grade 1 narrow stile device. The Detex 00 Advantex is a super-heavy-duty wide stile dummy device, so use it only on the inactive leaf where no latching is needed.
31) My opening is 36 inches, not 48 - what wide stile push pad rim devices cover that width?
The Von Duprin 98-4FT covers a 48 inch opening. For a 36 inch door in the same wide stile push pad type, the peer set includes the BEST Precision 2101 Series 36 inch wide stile rim exit device, the Corbin Russwin ED5200, a Grade 1 36 inch wide stile rim device for 1-3/4 inch doors that accepts trim, the Detex 10 Advantex 36 inch extra heavy duty Grade 1 wide stile device, and the TownSteel ED1100 36 inch heavy duty Grade 1 wide stile panic rim device. All four keep the wide stile mounting the 98 uses.
32) Do I have to specify handing when replacing a Von Duprin 98 rim device with another brand?
The Von Duprin 98-4FT rim device is non-handed except when SD special dogging, -2 double cylinder, or SS signal switch is specified. Peers that are likewise carried as non-handed or reversible include the BEST Precision 5101 Series, a non-handed universal design rim exit device, the BEST 2401 Series narrow stile exit only device described as non-handed, the CRL Jackson 1295 Series non-handed push pad rim panic device, and the Sargent 2828, a Grade 1 reversible rim device for a 48 inch minimum door width. Reversible means you set the hand in the field rather than at order.
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