Von Duprin 9975-3FT Wide Stile...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,932.00
$2,052.40
Von Duprin 9975 Series - 3 ft Grooved Case Wide Stile Mortise Exit Device

Von Duprin 9975-3FT Wide Stile Grooved Case Mortise Exit Device for 36" Doors

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Model: 9975EO 3 US26D
$2,932.00
$2,052.40
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,932.00
$2,052.40
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Von Duprin 9975-3FT Wide Stile Grooved Case Mortise Exit Device for 36" Doors

Heavy-Duty 99 Series Commercial Mortise Exit Device for Institutional Applications

The Von Duprin 9975-3FT is a professional-grade wide stile mortise exit device from the renowned 98/99 Series, engineered for demanding institutional environments including schools, hospitals, and government buildings. Featuring the distinctive grooved mechanism case of the 99 Series, this device is designed for 36" doors with a door thickness of 1-3/4" and accommodates wide stile construction. The 9975-3FT is certified to ANSI/BHMA A156.3 2014 Grade 1 standards and is UL listed for panic exit hardware, delivering the highest level of code-compliant performance for single and double door applications with mullion. Fasteners are included for wood or metal doors 1-3/4" and 2-1/4" thick, and the device ships as non-handed for straightforward installation flexibility.

Professional Features & Benefits

  • Wide Stile Grooved Case Design: The 99 Series grooved mechanism case distinguishes this device architecturally while providing heavy-duty push pad performance suited for high-traffic institutional applications.
  • Door Size & Thickness Compatibility: Engineered for 36" doors with a door thickness of 1-3/4", with a center case measuring 8" x 2-3/4" x 2-3/8" and a product projection of 3-13/16" for precise fit in wide stile applications.
  • Mortise Latch Performance: Features a 3/4" latch throw for reliable latching and secure door retention in commercial mortise exit device configurations.
  • Non-Handed Configuration: Ships as non-handed for versatile installation, except when specific device options such as SD (special dogging), -2 (Double Cylinder), or SS (signal switch) are selected.
  • Hex Key Dogging: Equipped with hex key dogging for convenient hold-open functionality, allowing facility managers to secure the device in the retracted position as needed.
  • ANSI/BHMA Grade 1 Certified: Certified to ANSI/BHMA A156.3 2014 Grade 1, the highest industry standard, along with ANSI/UL 305 and CAN/ULC-S132 compliance. Fire-rated configurations also meet ANSI/UL 10C and CAN/ULC-S104 requirements.
  • Field-Configurable & Retrofit-Ready: A broad range of field-configurable options and retrofit kits are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (RX request-to-exit, LX latchbolt monitoring) for access control integration.
  • Fasteners Included: Comes complete with fasteners for wood or metal doors 1-3/4" and 2-1/4" thick, simplifying installation across common door types.
  • Covers Standard Door Cutouts: Compatible with stock hollow metal doors featuring 86 or 161 cutouts on single doors, and may cover cutouts on pairs (consult template for pairs applications).

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 - Mortise
  • Product Type: Exit Devices - Mortise
  • Subcategory: Mortise 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: 9975-3ft
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/4"
  • Product Size: 36"
  • Dogging Configuration: Hex Key Dogging
  • Fire Rating: No
  • 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
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Retail Establishments

Why Choose Von Duprin Quality?

Von Duprin 98/99 Series mortise exit devices are certified to ANSI/BHMA A156.3 2014 Grade 1, the highest industry standard, and are UL listed for panic exit hardware, ensuring code-compliant performance in the most demanding institutional environments. The 9975-3FT features a heavy-duty wide stile push pad design with a grooved mechanism case, built to withstand high use and abuse in schools, hospitals, and government facilities. With a broad range of field-configurable options, retrofit kits, and compatible accessories, Von Duprin delivers the flexibility and long-term reliability that commercial door hardware professionals depend on.

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 - Mortise
Product Type:
Exit Devices - Mortise
Subcategory:
Mortise 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:
9975-3ft
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/4"
Product Size:
36"
Dogging Configuration:
Hex Key Dogging
Fire Rating:
No
Product Projection:
3-13/16"
Product Style:
Push Pads
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 9975EO 3 US26D – Frequently Asked Questions

1) What doors is the Von Duprin 9975 series compatible with?
The 9975 series fits wide stile doors with mortise preparation. Designed for commercial hollow metal and wood doors. Verify your door width and weight capacity before ordering.
2) How do I determine the correct handing for this exit device?
Stand on the egress side of the door. If hinges are on your right, order RHR. If hinges are on your left, order LHR. The 9975 series requires specific handing for proper operation.
3) What finishes are available for the 9975 series?
Standard finishes include 626 satin chrome, 628 satin aluminum, and 689 dark bronze. Some configurations may offer additional architectural finishes. Check specific model availability.
4) What fire rating does this exit device provide?
The 9975 series typically supports 3-hour fire ratings when properly installed on rated door assemblies. Verify specific UL listings and installation requirements for your application.
5) Does this device meet ADA accessibility requirements?
Yes, the 9975 series meets ADA requirements with proper installation. The crossbar operates with 15 pounds maximum force. Mounting height should comply with local accessibility codes.
6) What additional parts might I need for installation?
You'll need the appropriate strike, cylinder dogging if required, and mounting hardware. Wide stile applications may require specific brackets. Check Von Duprin templates for complete hardware lists.
7) How is the grooved case different from standard cases?
The grooved case provides enhanced grip for the crossbar mechanism. This design offers improved durability and smoother operation compared to standard smooth cases.
8) What door thickness does the 9975 series accommodate?
Standard models fit 1-3/4" to 2-1/4" door thickness. Extended spindle options may accommodate thicker doors. Verify compatibility with your specific door thickness requirements.
9) How do I adjust the latch retraction on this device?
Use the adjustment screws in the case to fine-tune latch retraction. Turn clockwise to increase retraction, counterclockwise to decrease. Make small adjustments and test operation.
10) What's the difference between 9975 and other Von Duprin series?
The 9975 series offers wide stile mortise preparation versus rim mount options in other series. It provides heavy-duty construction for high-traffic commercial applications.
11) Can this exit device be used on exterior doors?
Yes, with proper finish selection and weatherproofing. Consider environmental factors like moisture and temperature extremes. Some finishes perform better in exterior applications than others.
How fast can I get the Von Duprin 9975EO 3 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 9975EO 3 US26D come with a warranty?
Absolutely. The Von Duprin 9975EO 3 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 9975EO 3 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 9975EO 3 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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