Von Duprin 35AF-4ft Fire Rated...
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$2,884.00
$2,142.26
Von Duprin 35AF-4ft Fire Rated Narrow Stile Rim Exit Device, 4 ft Smooth Case, Less Dogging

Von Duprin 35AF-4ft Fire Rated Narrow Stile Rim Exit Device, 4 ft Smooth Case, Less Dogging

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Model: 35AEO-F 4 US26D
$2,884.00
$2,142.26
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$2,142.26
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Von Duprin 35AF-4ft Fire Rated Narrow Stile Rim Exit Device, 4 ft Smooth Case, Less Dogging

Commercial-Grade Fire Rated Panic Exit Hardware for Narrow Stile Doors

The Von Duprin 35AF-4ft is a fire rated, 4-foot smooth case narrow stile rim exit device engineered for demanding institutional and commercial applications. Designed to fit door stiles as narrow as 1 3/4" (44mm), this ANSI/BHMA A156.3 2014 Grade 1 certified device delivers reliable panic exit performance across single and double door configurations with mullion. Certified to ANSI/UL 10C for fire-rated applications and ANSI/UL 305 for panic exit hardware, the 35A-F is built to meet the highest industry standards in schools, hospitals, and government facilities. The smooth mechanism case and one-piece center case cover distinguish the 35A from the grooved-case 33A, offering a refined architectural profile without compromising heavy-duty performance.

Professional Features & Benefits

  • Narrow Stile Compatibility: Fits door stiles as narrow as 1 3/4" (44mm), making it ideal for aluminum-framed and narrow stile door applications where space is limited.
  • Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, ensuring code compliance in fire-rated door assemblies.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards, the highest industry certification for panic exit hardware, as well as ANSI/UL 305 and CAN/ULC-S132.
  • Smooth Mechanism Case: Features a smooth mechanism case with a newly designed one-piece center case cover for a clean architectural appearance and simplified maintenance.
  • Non-Handed Design: The rim device is non-handed (except when the SS signal switch option is used), simplifying specification and reducing inventory requirements.
  • Field-Configurable Options: A broad range of field-configurable options and retrofit kits — including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) — allow the device to adapt to evolving facility needs.
  • Upgrade & Retrofit Ready: Compatible with AX accessible device upgrade (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 option meeting NFPA and IBC requirements with 15-second delay and nuisance alarm.
  • Comprehensive Trim & Function Options: Supports 360 lever/thumbpiece trim (Classroom, Passage, Dummy), 386 pull trim (Storeroom, Dummy), and 388 optional pull trim (Storeroom), with a full range of levers and finishes available.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 33 & 35 Series
  • Grade: Grade 1
  • Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
  • Product Subgroup: Exit Devices - Rim
  • Subcategory: Rim Exit Devices
  • Latch Throw: 3/4"
  • Product Type: Exit Devices - Rim
  • Commercial/Residential: Commercial
  • Device Centerline from Finished Floor: 39-13/16"
  • Stile Type: Narrow Stile
  • Wood Door Compatible: No
  • MAP Policy: Yes
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4"
  • Product Size: 48"
  • Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
  • Fire Rating: Yes
  • Product Projection: 3-13/16"
  • Product Style: Push Pads
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Public and Private Educational Facilities (Schools and Universities)
  • Healthcare Institutions (Hospitals and Medical Centers)
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties Requiring Fire-Rated Egress
  • Retail Establishments with High-Traffic Exit Requirements

Delayed Egress Compliance

The 35A-F Series is compatible with the CX CHEXIT delayed egress upgrade option, which meets NFPA and IBC requirements for delayed egress applications. When installed, the device keeps doors secure for 15 seconds after a request to exit while a nuisance alarm sounds, providing an added layer of security without compromising life-safety compliance.

Why Choose Von Duprin Quality?

Von Duprin rim exit devices are certified to ANSI/BHMA A156.3 2014 Grade 1 — the highest industry standard for panic exit hardware — and carry ANSI/UL 10C and ANSI/UL 305 listings for fire-rated and panic exit compliance. The 35A-F Series is purpose-built for high-use institutional environments including schools, hospitals, and government facilities, with a broad ecosystem of retrofit kits and upgrade options to keep pace with evolving technology and code requirements. When dependable, code-compliant egress performance is essential, Von Duprin delivers the professional-grade reliability that commercial applications demand.

Product Specs

Product Group:
Exit Devices and Trim
Series:
33/35 Series
Grade:
Grade 1
Fasteners:
Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
Product Subgroup:
Exit Devices - Rim
Subcategory:
Rim Exit Devices
Latch Throw:
3/4"
Product Type:
Exit Devices - Rim
Commercial/Residential:
Commercial
Device Centerline from Finished Floor:
39-13/16"
Stile Type:
Narrow Stile
Wood Door Compatible:
No
MAP Policy:
Yes
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
48"
Product Dimension:
8-3/16" x 1-9/16" x 2-13/32"
Fire Rating:
Yes
Product Projection:
3-13/16"
Product Style:
Push Pads
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 35AEO-F 4 US26D – Frequently Asked Questions

1) Will the Von Duprin 35A-F fit an aluminum storefront door with a narrow stile?
Narrow stile is exactly what the 35A-F is built for. It mounts on stiles as narrow as 1-3/4 inches (44mm), which covers most aluminum storefront and narrow stile entrances. Door thickness is 1-3/4 inches. It is not for wood doors. Device projection off the face of the door is 3-13/16 inches, so check your swing clearance against adjacent walls or a return.
2) Is the Von Duprin 35A-F fire rated, and what standards does it hold?
Fire rated, yes. The 35A-F carries ANSI/UL 10C and CAN/ULC-S104 for fire door assemblies, plus ANSI/UL 305 and CAN/ULC-S132 for panic hardware, and it is certified to ANSI/BHMA A156.3 2014 Grade 1. That combination is what a fire-rated egress opening in a school, hospital, or government building needs on paper. Because it is fire rated, the device is supplied less dogging: mechanical dogging is not permitted on a fire door.
3) Does a rim exit device like the 35A-F need handing, and does it work on a pair of doors?
The 35A-F rim device is non-handed, so one part number covers left and right hand openings, which is why facilities stock it as a single line item. The one exception is the SS signal switch option, which makes it handed. On a pair of doors, a rim device latches into a strike, not into the frame head and sill, so a pair needs a mullion between the leaves. If you want to keep the opening clear with no mullion, you are looking at a vertical rod device instead.
4) Will the 35A-F latch into the strike I already have on the frame?
The latchbolt throws 3/4 inch. Rim strikes for panic hardware are cut for that throw, so an existing Von Duprin rim strike in good condition and set on the 39-13/16 inch device centerline will generally take it. Any strike prepped for a different centerline height or a deeper throw will not line up, and on a fire rated opening the strike has to be one listed for the assembly.
5) What outside trim options can I order with the Von Duprin 35A rim device?
Trim function is a choice you make on the order. The options run EO exit only, NL night latch, NL-OP night latch with optional pull, L lever and L-BE lever with blank escutcheon, T thumbturn and T-BE, TL thumbturn and unlocks and TL-BE, and DT dummy trim. Von Duprin supports 360 lever/thumbpiece trim in Classroom, Passage and Dummy, 386 pull trim in Storeroom and Dummy, and 388 optional pull trim in Storeroom. If you pick an L function, you also pick the lever design: 01, 02, 03, 05, 06, 07, 17 or 18.
6) Can the Von Duprin 35A be electrified for access control, and what are the options?
Yes, several ways, and you specify them when you order. For latch retraction: EL electric latch retraction, QEL quiet electric latch retraction, or PN pneumatic. For monitoring and signalling: RX request to exit, LX latchbolt monitor, LX-RX combination, RX2 double request to exit, WP-RX waterproof RX, plus ALK alarm exit kit variants (ALK less switch, RX-ALK, LXRX-ALK). QEL is the usual pick where noise matters, since standard EL retraction is audible. Note that the SS signal switch option makes the device handed.
7) Does the 35A-F meet ADA opening force, and can it do delayed egress?
Both are option upgrades on the 35A-F. The AX accessible device option is certified to the 5 lb force requirement per 2010 ADA Chapters 404.2.7 and 30934 and 2013 California Building Code Chapter 11B-309.4, and AX is a required selection when ordering. For delayed egress, the CX CHEXIT option meets NFPA and IBC requirements, holding the door 15 seconds after a request to exit while a nuisance alarm sounds.
8) What are the alternatives to the Von Duprin 35A-F for a fire rated narrow stile door?
If you need fire rated and narrow stile together, the Adams Rite 3700 Series is the closest cross-brand equivalent, also Grade 1 and fire rated, and unlike the Von Duprin it is listed as wood door compatible. Where the opening is not fire rated, the Adams Rite 8700 and 8800 Series and the Corbin Russwin ED4200 are Grade 1 narrow stile rim devices. Watch the ones that look like substitutes but are not: the Adams Rite 8800, the BEST 2401 and the Detex 40 are all narrow stile but not fire rated, so none of them belongs on a fire door assembly.
9) Can I hold the Von Duprin 35A-F push pad down to keep the door unlatched during business hours?
No. The 35A-F is supplied less dogging, so there is no mechanical hold-down, and that is correct for a fire rated device. To leave an opening on free access during the day, use an electrified option instead: EL or QEL latch retraction driven from an access control schedule. If mechanical dogging is what you actually want, the opening cannot be a fire rated one, and devices like the Design Hardware 1000R and 2000R are supplied with hex key dogging.
10) What is the closest fire rated narrow stile rim exit device to the Von Duprin 35AF if I need a different brand on the same aluminum opening?
The Adams Rite 3700 Series is the closest match in the fire rated narrow stile category. Both are Grade 1 and both are fire rated narrow stile rim devices. The difference that matters on a job: the Von Duprin 35AF is not wood door compatible, while the Adams Rite 3700 Series is listed as wood door compatible, so the 3700 covers both aluminum and wood openings where the 35AF is aluminum and hollow metal only. The Adams Rite 3700 comparable is a 30 inch device, against the 48 inch size of the 35AF-4ft, so confirm the device length matches the door width before substituting.
11) Is the Adams Rite 8800 Series a substitute for the Von Duprin 35AF?
Not on a fire rated opening. The Adams Rite 8800 Series is a Grade 1 narrow stile rim exit device that is not wood door compatible, which lines up with the Von Duprin 35AF on grade, stile type, and door material. But the 8800 Series carries no fire rating, and the 35AF is fire rated. On a fire rated door assembly the 8800 is not an equivalent. Where the 8800 does go further is door thickness: it covers 1-3/4 inch to 2-1/4 inch, while the 35AF is specified for 1-3/4 inch doors.
12) The Von Duprin 35AF-4ft comes less dogging - what narrow stile rim device has mechanical dogging instead?
The Stanley Security QED200 Series is a Grade 1 heavy duty narrow stile rim exit device with hex key dogging. For a wide stile opening, the Design Hardware 1000R is a heavy duty rim device with hex key dogging and the Design Hardware 2000R is the standard duty wide stile version with hex key dogging. Keep in mind the 35AF is fire rated and these three are not, and fire rated assemblies do not permit the latch to be dogged down, which is why the fire rated 35AF-4ft is supplied less dogging in the first place.
13) I need an electrified rim exit device - how do the alternatives compare to a Von Duprin 35AF with QEL?
The Von Duprin 35AF takes electric latch retraction as EL, quiet electric latch retraction as QEL, or pneumatic latch retraction, along with RX request to exit, LX latchbolt monitor, and alarm kit switch options, on a fire rated Grade 1 narrow stile device. Among alternatives, the SDC S6136 Spectra is an electrified architectural rim device but on a 4 inch wide stile for 1-3/4 inch to 2 inch doors and it is not fire rated. The Dormakaba E2103 with 4908A trim is an electrified 36 inch rim device in classroom function. The Securitron EMB is an electromechanical exit bar for 2-1/4 inch doors. None of those three is a narrow stile fire rated device, so on a rated aluminum opening the 35AF with QEL is the configuration that holds the rating.
14) Is a pressure sense bar or switch bar an alternative to the Von Duprin 35AF?
No, and this is a common mix-up. The SDC MSB550 mechanical switch bar and the SDC SureExit PSB560 pressure sense bar both mount on narrow or wide stile doors in 36 inch lengths, but they release an electromagnetic lock rather than operating a latch. The Von Duprin 35AF is a mechanical rim latching device with a 3/4 inch latch throw that engages a strike, and it is fire rated. Neither SDC bar is fire rated, and neither one latches the door, so they are not a substitute where the opening needs a latching panic device on a rated assembly.
15) What is the difference between the Von Duprin 33A and the 35A?
Mechanism case appearance, not function. The 35A has a smooth mechanism case with a one-piece center case cover; the 33A has a grooved case. Both are narrow stile rim devices in the same 33/35 family with the same option ecosystem behind them. Pick the 35A when you want the cleaner architectural face, and match whichever one is already on the neighbouring openings so the building reads consistently.
16) What fasteners come with the Von Duprin 35A, and do I need anything else to install it?
The device ships with 1-3/4 inch and 2-1/4 inch wood/metal door fasteners and SNB (sex nut and bolt) hardware, so the through-bolting for a 1-3/4 inch door is in the box. What is not in the box is the outside trim and the cylinder if your function needs one: NL, TL and lever locking functions take a rim cylinder, which is ordered separately. Electrified options also need a power supply and, on a swinging door, a transfer hinge or door loop.
17) Can I add request-to-exit or security dogging indication to Von Duprin 35A devices already installed in my building?
Yes. Von Duprin publishes field-configurable options and retrofit kits for the 33/35 family, including CDSI and HDSI security dogging indicators, QEL quiet electric latch retraction, and the RX request-to-exit and LX latchbolt monitoring switches. That means an existing bank of 35A openings can be brought onto an access control or monitoring system without pulling the devices and starting over, which is the usual reason a facility standardizes on this family in the first place.
18) What is a simpler exit only narrow stile rim device if I do not need the trim and switch options of the Von Duprin 35AF?
The Falcon 19-R Series is a Grade 1 exit only narrow stile rim device for 1-3/4 inch doors in a 36 inch length, and the Falcon 1590EO is a Grade 1 exit only narrow stile rim device for 1-3/4 inch doors in a 42 inch length. Both are exit only, meaning no outside trim. The Von Duprin 35AF is offered across ten trim functions from exit only through lever, night latch, and thumbturn, and takes RX, LX, and alarm switch options plus electric latch retraction, so if the opening only ever needs push to exit the Falcon devices cover the same narrow stile, 1-3/4 inch door condition without the trim ecosystem. Neither Falcon option carries a fire rating, so they do not substitute on a fire rated assembly.
19) Which narrow stile rim exit devices besides the Von Duprin 35AF carry an ANSI Grade 1 rating for an institutional spec?
Several. The Detex 40 Advantex Series is a Grade 1 extra heavy duty narrow stile rim device. The Corbin Russwin ED4200 is a Grade 1 narrow stile rim device for 1-3/4 inch doors that accepts trim as well as running exit only. The Stanley Security QED200 Series is a Grade 1 heavy duty narrow stile rim device with hex key dogging, and the Dormakaba QED200 is the Grade 1 heavy duty narrow stile equivalent in a 36 inch device. The Sargent 8504 is a Grade 1 narrow stile rim device in night latch function. Where the 35AF separates itself in this group is the fire rating, which it carries and these do not state.
20) Can I use a crossbar exit device in place of the Von Duprin 35AF push pad device?
Only if the opening allows it. The Von Duprin 35AF uses a push pad style device on a narrow stile door. Crossbar alternatives in the same 48 inch length include the CRL Jackson 1095 Series 48 inch crossbar rim panic device, which is a wide stile exit only device, and the Corbin Russwin ED3200, a Grade 1 48 inch crossbar rim device for 1-3/4 inch wide stile doors. Both are crossbar and wide stile, so they will not mount on the narrow stile aluminum door the 35AF is designed for, and neither carries a fire rating.
21) What Grade 2 rim exit device options exist if the Von Duprin 35AF is more device than the opening needs?
The Cal-Royal 5000 is a 36 inch heavy duty touch bar rim exit device with a Grade 2 chassis, and the Cal-Royal 5500 is a 48 inch heavy duty push bar rim device also rated Grade 2. Both match the 48 inch or 36 inch device lengths common on commercial openings, and the 5500 is the same 48 inch length as the 35AF-4ft. Neither Cal-Royal device is fire rated and neither is wood door compatible, so for a fire rated assembly the Grade 1, fire rated 35AF remains the device that meets the requirement.
22) Is a concealed vertical rod device an alternative to the Von Duprin 35AF rim device?
They solve different openings. The Von Duprin 35AF is a rim device, latching into a strike on the frame or a mullion on a pair. The Hager 4601 Series is a Grade 1 concealed vertical rod narrow stile exit device and the Hager 4501 Series is the Grade 1 concealed vertical rod version with a wide stile pushpad, both 36 inch. Vertical rod devices latch top and bottom into the frame and floor, which is what a pair without a mullion requires. Neither Hager concealed vertical rod device is fire rated, while the 35AF is.
23) How does the BEST Precision 2401 narrow stile rim device compare to the Von Duprin 35AF?
The BEST Precision 2401 Series is a narrow stile rim exit device in exit only function with a non-handed design, and it is not wood door compatible. The Von Duprin 35AF is also non-handed and also not wood door compatible, so both simplify stocking across handings on aluminum and hollow metal doors. The separating spec is the fire rating and the certification: the 35AF is Grade 1 and fire rated, which is what a rated egress assembly calls for. The 2401 is also exit only, while the 35AF is offered in ten trim functions from exit only through lever and night latch.
24) Which rim exit devices match the Von Duprin 35AF on the 1-3/4 inch door thickness for an aluminum storefront?
Within the narrow stile group, the Corbin Russwin ED4200 is a Grade 1 narrow stile rim device for 1-3/4 inch doors, and the Falcon 19-R and Falcon 1590EO narrow stile devices are both specified at 1-3/4 inch. Outside the narrow stile group, the Arrow 4800 Series and the Arrow ED910 are 1-3/4 inch rim devices that are not wood door compatible. All of those match the 1-3/4 inch door thickness of the Von Duprin 35AF, but the 35AF is the fire rated one among them, and it fits a stile as narrow as 1-3/4 inch with a 3-13/16 inch projection off the door face.
25) What finishes does the Von Duprin 35A rim exit device come in?
Ten, so matching an existing set of openings is usually possible: 605 bright brass, 606 satin brass, 612 satin bronze, 613 oil rubbed bronze, 625 bright chrome, 626 satin chrome, 628 aluminum, 643E aged bronze, 710 dark bronze anodized, and 711 flat black. On aluminum storefront, 628 and 710 are the two that normally match the existing framing.
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Does the Von Duprin 35AEO-F 4 US26D come with a warranty?
Absolutely. The Von Duprin 35AEO-F 4 US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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