Von Duprin 3357AF-3ft Fire Rat...
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$4,176.00
$4,128.91
Von Duprin 3357AF-3ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

Von Duprin 3357AF-3ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

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Model: 3527AEO-F 3 US26
$4,176.00
$4,128.91
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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$4,128.91
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Von Duprin 3357AF-3ft Fire Rated Surface Vertical Rod Exit Device, Narrow Stile, 36" Smooth Case, Less Dogging

Commercial-Grade Fire Rated Surface Vertical Rod Exit Device for Narrow Stile Doors

The Von Duprin 3527A-F is a fire rated surface-mounted vertical rod exit device engineered for demanding institutional environments including schools, hospitals, and government buildings. Featuring a smooth mechanism case and narrow stile compatibility down to 1-3/4" (44mm), this 36" device is ANSI/BHMA A156.3 2014 Grade 1 certified and UL listed for panic exit hardware under ANSI/UL 10C. The 3527A-F is non-handed (except when the SS signal switch option is used), making it highly versatile for single and double door applications. The newly designed one-piece center case cover contributes to a clean architectural profile suited for high-traffic commercial installations.

Professional Features & Benefits

  • Narrow Stile Compatibility: Fits door stiles as narrow as 1-3/4" (44mm), making it ideal for aluminum and narrow-profile door frames in commercial applications.
  • Product Size & Dimensions: Designed for 36" doors with a mechanism case measuring 8-3/16" x 1-9/16" x 2-13/32" and a product projection of 3-13/16" for a low-profile installation.
  • Door Thickness Compatibility: Accommodates door thickness of 1-3/4" with included 1-3/4" and 2-1/4" wood/metal door fasteners (SNB included) for flexible installation.
  • Fire Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 fire-rated standards, ensuring compliance in fire-rated door assemblies where life safety is paramount.
  • Grade 1 Certified Performance: ANSI/BHMA A156.3 2014 Grade 1 certified and listed to ANSI/UL 305 and CAN/ULC-S132, meeting the highest industry standards for panic exit hardware durability and reliability.
  • Smooth Mechanism Case Design: The 3527A features a smooth mechanism case (versus the grooved case of the 3327A), providing a refined architectural appearance appropriate for upscale institutional and commercial settings.
  • Non-Handed Configuration: The surface vertical rod device is non-handed except when the SS (signal switch) option is used, simplifying specification and reducing inventory requirements.
  • Field-Configurable Options & Retrofit Kits: A variety of field-configurable options are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request to exit, LX latchbolt monitoring) for integration with access control systems.
  • ADA & Delayed Egress Upgrade Paths: Upgradeable to 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) or CX CHEXIT delayed egress (15-second delay per NFPA and IBC requirements).
  • Device Centerline from Finished Floor: Positioned at 39-13/16" from finished floor for ergonomic and code-compliant operation.
  • Latch Throw: 3/4" latch throw provides secure latching engagement for vertical rod top and bottom bolt applications.

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 - Vertical Rod
  • Subcategory: Surface Vertical Rod Exit Devices
  • Latch Throw: 3/4"
  • Product Type: Exit Devices - Surface Vertical Rod
  • Commercial/Residential: Commercial
  • Device Centerline from Finished Floor: 39-13/16"
  • Stile Type: Narrow Stile
  • MAP Policy: Yes
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4"
  • Product Size: 36"
  • 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 and Hospitals
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential and Mixed-Use Properties
  • Retail Establishments Requiring Fire-Rated Egress Compliance

Why Choose Von Duprin Quality?

Von Duprin surface vertical rod exit devices are engineered to the highest industry standards, with the 3527A-F Series achieving ANSI/BHMA A156.3 2014 Grade 1 certification and full compliance with ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for fire-rated applications. The narrow stile design accommodates stiles as narrow as 1-3/4" (44mm), and the smooth mechanism case with one-piece center case cover reflects the architectural precision Von Duprin brings to institutional-grade hardware. Trusted in schools, hospitals, and government facilities, Von Duprin exit devices deliver dependable life-safety performance in the most demanding commercial environments.

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 - Vertical Rod
Subcategory:
Surface Vertical Rod Exit Devices
Latch Throw:
3/4"
Product Type:
Exit Devices - Surface Vertical Rod
Commercial/Residential:
Commercial
Device Centerline from Finished Floor:
39-13/16"
Stile Type:
Narrow Stile
MAP Policy:
Yes
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
36"
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 3527AEO-F 3 US26 – Frequently Asked Questions

1) Is the Von Duprin 3357AF fire rated for a fire door assembly?
Fire rated, yes. The 3357AF carries a fire rating and is certified to ANSI/UL 10C and CAN/ULC-S104, plus ANSI/UL 305 and CAN/ULC-S132 for panic hardware, and it is ANSI/BHMA A156.3 2014 Grade 1. One consequence a lot of buyers miss: fire rated exit devices cannot be dogged, which is why this one ships less dogging. If you need a device you can hold latched open during business hours, you need a non fire rated device on a non rated opening.
2) Do I have to specify handing on the Von Duprin 3357AF?
The device itself is non-handed, so a single part covers both leaves of a pair. The one exception is the SS signal switch option, which is handed. Handing is still asked for on the order because the lever trim and switch options need it, so have RHR or LHR confirmed off the door before you order.
3) Can a surface vertical rod exit device secure a pair of doors with no center mullion?
That is exactly what it is for. A surface vertical rod device like the Von Duprin 3357AF latches into a strike at the head and one at the threshold rather than into a jamb, so a pair of doors can be secured without a mullion in the middle. A rim device on the same pair needs a removable mullion to have anything to latch into. The tradeoff is the rods and the top and bottom strikes are surface applied and visible on the door face, with a 3-13/16 inch projection.
4) Will the Von Duprin 3357AF latch into my existing top and bottom strikes?
The 3357AF has a 3/4 inch latch throw at both the top and bottom bolts. If your existing head and threshold strikes were cut for a 3/4 inch throw vertical rod bolt, engagement depth matches. Measure the existing strike pocket before you reuse it: undercut floor strikes and worn thresholds are the usual reason a replacement device sits with the bottom bolt not fully seated.
5) What is less bottom rod (LBR) and should I order the 3357AF that way?
Less bottom rod deletes the lower rod, bottom latch and floor strike, so the device latches only at the head. Order it that way where the floor is uneven, where a floor strike would be a trip hazard or fill with grit, or on carpeted openings. Both LBR and full top-and-bottom-rod configurations are offered on the 3357AF. Note that removing the bottom bolt takes security at the base of the door with it, so on a rated opening confirm your authority having jurisdiction accepts the LBR configuration for that assembly.
6) Does the Von Duprin 3357AF meet the ADA 5 pound operating force requirement?
Only in the AX configuration. The 3357AF is upgradeable to AX, which is certified to the 5 pound force requirement of 2010 ADA chapters 404.2.7 and 30934 and 2013 California Building Code chapter 11B-309.4. AX is a yes or no choice made at order, so if the opening is on an accessible route, select it. A standard non-AX device ordered onto that opening is the wrong part.
7) Is the TownSteel EF9727 a drop-in substitute for the Von Duprin 3357AF?
Not on a narrow stile door. The TownSteel EF9727 is fire rated and Grade 1 at 36 by 84 inches, which reads like a match, but it is a wide stile device and the 3357AF is narrow stile down to 1-3/4 inches. Put the EF9727 on an aluminum storefront leaf and the case runs past the glass line. On a wide stile hollow metal or wood door it is a real fire rated alternative, and it is listed wood door compatible.
8) The door is a wide stile aluminum or hollow metal leaf, not narrow stile - what surface vertical rod exit device fits instead of the 3357AF?
The Von Duprin 3357AF-3ft is built for narrow stile down to a 1-3/4 inch door. For a wide stile leaf that still needs a fire label, the TownSteel 9700 Series EF9727 is a Grade 1 fire rated wide stile heavy duty device for a 36 inch by 84 inch door, and the Sargent 2727 is a Grade 1 fire rated reversible wide stile exit only device. Where no fire label is required, the Corbin Russwin ED5400 and the Falcon 25-V-EO are Grade 1 wide stile exit only devices for a 1-3/4 inch door, and the BEST Precision 2201 is a 36 inch wide stile device.
9) Which surface vertical rod exit devices look like a substitute for the Von Duprin 3357AF but will not pass on a fire rated door?
Several devices share the same form and the same 36 inch class but are listed as not fire rated, so they cannot replace the fire rated 3357AF-3ft on a labeled assembly: the Adams Rite 8200 Series narrow stile life safety device, the Adams Rite 8100 Series wide stile life safety device, the Corbin Russwin ED4400 and ED7400 narrow stile devices, the TownSteel 8900 Series ED3727 narrow stile device, and the Falcon 19-V-EO narrow stile exit only device. The Adams Rite 3100 Series is the fire rated member of that Adams Rite group, Grade 1 for a 1-3/4 inch door, though it is a wide stile device.
10) What is the closest fire rated surface vertical rod exit device to the Von Duprin 3357AF-3ft from another brand?
The nearest equivalents are the Arrow S1150 30 inch fire rated surface vertical rod exit device, which is listed for narrow or wide stile and a 1-3/4 inch door thickness range, and the TownSteel 9700 Series EF9727, a Grade 1 fire rated heavy duty surface vertical rod device for a 36 inch by 84 inch door. The Von Duprin 3357AF-3ft is Grade 1, fire rated, narrow stile, sized for a 36 inch door and a 1-3/4 inch door thickness. The Arrow S1150 in the 30 inch size covers a narrower door leaf, and the TownSteel EF9727 is a wide stile device, so on an aluminum narrow stile opening the Arrow is the closer stile match and the TownSteel is the closer size match.
11) What narrow stile surface vertical rod exit device can be used on a 36 inch opening that is not fire rated?
Three Grade 1 narrow stile options cover a 36 inch non fire rated opening: the Corbin Russwin ED4400, exit only and accepts trim, for a 1-3/4 inch door; the Corbin Russwin ED7400, a crossbar device that accepts operator trim, also 1-3/4 inch; and the TownSteel 8900 Series ED3727 for a 36 inch by 84 inch door, listed as wood door compatible. The Falcon 19-V-EO is another Grade 1 narrow stile exit only device at 36 inch and 1-3/4 inch door thickness. All four are listed as not fire rated, so they belong on openings where the door assembly carries no fire label; the Von Duprin 3357AF-3ft is the fire rated narrow stile choice.
12) Is the Sargent 12-8710 an alternative to the Von Duprin 3357AF on an active leaf?
No. The Sargent 12-8710 is a dummy function surface vertical rod device in a wide stile design, so it presents the same appearance without operating latches and belongs on an inactive leaf or where a matching look is wanted without egress function. The Von Duprin 3357AF-3ft is a working Grade 1 fire rated narrow stile device with a 3/4 inch latch throw at the top and bottom bolts. For an operating wide stile fire rated leaf, the Sargent 2727 exit only device is the working counterpart.
13) What trim options can I get on the Von Duprin 3357AF, and what do I order if I want outside access?
Ten trim functions are offered: EO exit only, L lever, L-BE lever with blank escutcheon, L-DT lever dummy trim, NL night latch, NL-OP night latch with optional pull, T thumbturn, T-BE thumbturn with blank escutcheon, TL thumbturn and unlocks, and TL-BE. For keyed outside entry, night latch (NL) is the usual pick; for a full outside lever, order an L function and pick the lever design, which comes in 01, 02, 03, 05, 06, 07, 17 and 18 styles. Order EO if the door is egress only with no outside operation.
14) Can the Von Duprin 3357AF be tied into an access control system?
Yes, and the electrification is specified at order time rather than added later in the field with any ease. Latch retraction comes as EL electric latch retraction, QEL quiet electric latch retraction, or PN pneumatic. Monitoring and signalling options include RX request to exit, LX latchbolt monitor, LX-RX combined, RX2 double request to exit, WP-RX waterproof, and ALK alarm kits with or without RX and LX switches. Security dogging indicators CDSI and HDSI are also available. Remember the SS signal switch makes the device handed.
15) What mounting hardware comes with the Von Duprin 3357AF, and do I need anything else?
Fasteners for both wood and metal doors are in the box, in 1-3/4 inch and 2-1/4 inch lengths, with SNB sex nut and bolt hardware included. What is not in the device carton is the outside trim, which is ordered separately by function and lever design, and a cylinder if you specify a keyed function such as night latch.
16) What height should the exit device push pad be mounted at?
Von Duprin gives 39-13/16 inches from finished floor to the device centerline on the 3357AF. Use that when you are laying out a run of doors so the push pads line up across the openings, and check it against the mounting heights already on your other leaves before drilling.
17) Can I get delayed egress on this Von Duprin exit device?
Yes, through the CX CHEXIT upgrade, which gives a 15 second delay per NFPA and IBC requirements. That is the path when you need to slow an exit at a stairwell, a retail back door or a healthcare unit while keeping the opening code compliant for egress. Specify CX at order rather than planning to retrofit it.
18) Will the 36 inch Von Duprin 3357AF work on a 30 inch or 42 inch door?
No. The 3357AF at 36 inches is sized for a 36 inch door leaf, and an exit device has to be sized to the leaf so the push pad covers roughly half the door width without overhanging the stile. For a narrower leaf, look at a 30 inch device such as the Adams Rite 3100 Series fire rated surface vertical rod. Order the device size against the actual leaf width, not the frame opening.
19) Is there a Grade 2 surface vertical rod exit device instead of a Grade 1 for a lower traffic opening?
Two Grade 2 surface vertical rod devices sit below the Grade 1 tier: the Dexter ED2000 Series panic device and the TownSteel TS5100 Series heavy duty device for a 36 inch by 84 inch door. Both are listed as not fire rated. The Von Duprin 3357AF-3ft is ANSI/BHMA Grade 1 and fire rated, so on a labeled door or a Grade 1 specification neither Grade 2 device substitutes; they apply where the drawing calls out Grade 2 on an unlabeled opening.
20) Which surface vertical rod exit devices are reversible or non-handed like the Von Duprin 3357AF?
The Von Duprin 3357AF-3ft is non-handed. Among other brands, the Sargent 2727 is a reversible Grade 1 fire rated wide stile device, the BEST Precision 5201 Series 36 inch device is reversible, and the Orca Hardware OED56 Series 36 inch device is non-handed and supplied less bottom rod in an aluminum finish. Reversible and non-handed both mean one part number covers left and right hand reverse openings, which is what lets a facility stock a single device across a run of doors.
21) What is a simpler exit only surface vertical rod device when no lever or outside trim is needed?
The Von Duprin 3357AF-3ft covers exit only along with lever, night latch and thumbturn trim functions, so a job that needs no outside trim can be ordered as EO. If the specification points to a dedicated exit only device, the Falcon 24-V-EO is Grade 1 narrow stile exit only for a 1-3/4 inch door, the Falcon 19-V-EO is Grade 1 narrow stile exit only and not fire rated, the Dexter ED1000 Series is a Grade 1 exit only vertical rod device, and the Arrow S1150 is a fire rated device supplied less trim.
22) What is the difference between a push pad exit device like the Von Duprin 3357AF and a crossbar device?
The Von Duprin 3357AF-3ft uses a push pad style actuator on a 36 inch narrow stile device with a 3-13/16 inch projection. The Corbin Russwin ED7400 is a Grade 1 narrow stile crossbar surface vertical rod device that accepts operator trim, for a 1-3/4 inch door. The Arrow 3700 Series 30 inch device is a wide stile pushpad device, and the Sargent 3727 is a Grade 1 wide stile device with a standard push bar. A crossbar spans the door as a horizontal bar while a push pad is a paddle across the mechanism case, and the choice usually follows the architectural specification and what is already on adjacent doors.
23) Which surface vertical rod exit device comes less bottom rod to keep the floor clear?
The Von Duprin 3357AF-3ft can be ordered with or without the bottom rod. The Orca Hardware OED56 Series 36 inch standard duty device is supplied less bottom rod, non-handed, in an aluminum finish, and is listed as exit only for a 1-3/4 inch door and not fire rated. Removing the bottom rod eliminates the floor strike and the debris that collects in it, which matters in corridors that get wet mopped or see cart traffic.
24) What is the difference between the Von Duprin 3527A smooth case and the 3327A?
Case appearance. The 3527A uses a smooth mechanism case where the 3327A uses a grooved one, and both sit in the 33/35 Series. Mechanically you are choosing a look, so the deciding factor is usually matching the other devices already installed in the building. The case measures 8-3/16 x 1-9/16 x 2-13/32 inches with a one-piece center case cover.
25) What finishes does the Von Duprin 3357AF exit device come in?
Ten: 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. For matching an existing aluminum storefront run, 628 and 710 are the two that usually line up with the door framing; 626 is the common institutional choice where the rest of the hardware is satin chrome.
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Does the Von Duprin 3527AEO-F 3 US26 come with a warranty?
Absolutely. The Von Duprin 3527AEO-F 3 US26 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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