Von Duprin 33AF-4ft Fire Rated...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,629.00
$1,975.34
Von Duprin 33AF-4ft Fire Rated Grooved Case Narrow Stile Rim Exit Device, Less Dogging, 48"

Von Duprin 33AF-4ft Fire Rated Grooved Case Narrow Stile Rim Exit Device, Less Dogging, 48"

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Model: 33AEO-F 4 US26D
$2,629.00
$1,975.34
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In Stock (leaves warehouse same day if ordered before 3pm ET)

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Von Duprin 33AF-4ft Fire Rated Grooved Case Narrow Stile Rim Exit Device, Less Dogging, 48"

Heavy-Duty Narrow Stile Rim Exit Device for Commercial and Institutional Applications

The Von Duprin 33AF-4ft is a fire-rated, grooved case narrow stile rim exit device engineered for demanding institutional environments including schools, hospitals, and government buildings. Designed to fit door stiles as narrow as 1-3/4" (44mm), this 48" device features a one-piece center case cover and is certified to ANSI/BHMA A156.3 2014 Grade 1 standards. It is UL listed for panic exit hardware under ANSI/UL 10C (fire-rated) and ANSI/UL 305, and also carries CAN/ULC-S104 (fire-rated) and CAN/ULC-S132 certifications. The device is non-handed, offering flexible installation across single and double door configurations with mullion, and includes 1-3/4" and 2-1/4" wood/metal door fasteners with SNB included.

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 in commercial settings.
  • 48" Device Size: Product size of 48" with overall dimensions of 8-3/16" x 1-9/16" x 2-13/32" and a product projection of 3-13/16" for precise installation planning.
  • Fire-Rated Construction: Certified to ANSI/UL 10C and CAN/ULC-S104 for fire-rated applications, ensuring compliance with fire and life safety codes where required.
  • ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 standards, the highest industry certification for exit hardware durability and performance.
  • Non-Handed Design: The rim device is non-handed (except when the SS signal switch option is used), simplifying specification and reducing inventory requirements.
  • Grooved Mechanism Case: The 33A Series features a distinctive grooved mechanism case with a newly designed one-piece center case cover for a refined architectural appearance.
  • Field-Configurable Options: A variety of field-configurable options are available, including retrofit kits (CDSI/HDSI dogging indicators, QEL electronic latch retraction, RX request-to-exit, and LX latchbolt monitoring switches) to keep pace with evolving technology.
  • Included Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners with SNB included for versatile mounting configurations.
  • ADA-Accessible Upgrade Available: The AX option is certified to meet the 5 lb. force requirements of the 2010 Americans with Disabilities Act (ADA) Chapters 404.2.7 and 30934, and the 2013 California Building Code Chapter 11B-309.4.
  • Delayed Egress Option: The CX (CHEXIT) upgrade meets NFPA and IBC requirements for delayed egress, securing doors for 15 seconds after a request to exit while a nuisance alarm sounds.

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 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

Delayed Egress Compliance

The Von Duprin 33A Series supports the CX (CHEXIT) delayed egress upgrade option, which meets NFPA and IBC requirements for delayed egress applications. When activated, the device 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 egress management.

Why Choose Von Duprin Quality?

Von Duprin rim exit device products deliver professional-grade reliability backed by ANSI/BHMA A156.3 2014 Grade 1 certification — the highest standard in the industry — along with UL listings under ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 for comprehensive code compliance. The 33A Series grooved case design with one-piece center case cover reflects Von Duprin's commitment to both architectural quality and institutional durability. Engineered for demanding commercial applications in schools, hospitals, and government facilities where dependable, fire-rated egress performance is essential.

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

Parts & Accessories

    Von Duprin 33AEO-F 4 US26D – Frequently Asked Questions

    1) What doors is the Von Duprin 33A-F fire-rated exit device designed for?
    The 33A-F is designed for narrow stile doors with grooved case mounting. It's fire-rated for doors requiring egress hardware that meets fire code requirements. Verify your door width and stile dimensions match the device specifications.
    2) What does "less dogging" mean for this exit device?
    "Less dogging" means this device does not include the dogging feature that allows the pushbar to be held in the depressed position. The device will always require pushing the bar to unlatch the door, ensuring consistent egress operation.
    3) How do I determine the correct handing for this rim exit device?
    Stand on the egress side (side you exit from) of the door. If the hinges are on your right, order right-hand handing. If hinges are on your left, order left-hand handing. Specify handing when ordering.
    4) What finishes are available for the Von Duprin 33A-F series?
    Von Duprin typically offers finishes including aluminum, dark bronze, and others. Check the specific finish options available for your model number. Ensure interior and exterior components match if using cylinder dogging or other accessories.
    5) What is the difference between rim and mortise exit devices?
    Rim devices like the 33A-F mount on the interior surface of the door. Mortise devices fit into a pocket cut into the door edge. Rim devices are easier to install and retrofit but add thickness to the door.
    6) Does this device meet ADA accessibility requirements?
    Von Duprin exit devices typically meet ADA requirements for operating force and height when properly installed. Verify the specific model meets your project's accessibility compliance needs and local code requirements.
    7) What accessories work with the 33A-F series exit device?
    Compatible accessories may include cylinder dogging, key override cylinders, pull handles, and weather protection. Verify accessory compatibility with your specific model number and finish requirements.
    8) How is the grooved case different from standard mounting?
    Grooved case mounting uses channels or grooves in the door for device attachment rather than through-bolts. This provides a cleaner appearance and may be required for certain door constructions or fire ratings.
    9) What door thickness range does this exit device accommodate?
    Check the manufacturer's specifications for exact door thickness requirements. Most Von Duprin rim devices accommodate standard commercial door thicknesses. Verify your door thickness falls within the acceptable range.
    10) How do I maintain proper operation of this exit device?
    Regularly test pushbar operation and verify smooth latching/unlatching. Clean the device periodically and lubricate moving parts per manufacturer guidelines. Check mounting hardware tightness and alignment.
    11) Can this device be used on double doors?
    Exit devices can be used on double doors with proper coordination hardware and vertical rod assemblies where required. Consult Von Duprin's double door solutions and coordinate with the inactive leaf hardware.
    12) What should I check before installing this exit device?
    Verify door preparation matches the manufacturer's template. Check door alignment, frame squareness, and hardware mounting locations. Ensure you have the correct handing and finish. Review local fire and building code requirements.
    How fast can I get the Von Duprin 33AEO-F 4 US26D delivered?
    Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
    Can I return it if it doesn’t work for me?
    Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
    Does the Von Duprin 33AEO-F 4 US26D come with a warranty?
    Absolutely. The Von Duprin 33AEO-F 4 US26D 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 33AEO-F 4 US26D?
    You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
    Why buy the Von Duprin 33AEO-F 4 US26D from ZenSupply?
    ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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