Von Duprin 9875F-4FT Fire Rated 4 ft Wide Stile Mortise Exit Device, Less Dogging

Von Duprin 9875F-4FT Fire Rated 4 ft Wide Stile Mortise Exit Device, Less Dogging

Commercial-Grade Mortise Exit Device for Demanding Institutional Applications

The Von Duprin 9875F-4FT is a fire rated, 4 ft (48") wide stile mortise exit device from the renowned 98/99 Series, engineered for high-use institutional environments including schools, hospitals, and government buildings. Featuring a smooth mechanism case and heavy-duty push pad design, this device is certified to ANSI/BHMA A156.3 2014 Grade 1 standards and carries ANSI/UL 10C fire-rated listing, as well as CAN/ULC-S104 fire-rated certification. Designed for single and double doors with mullion, the 9875F-4FT accommodates door thicknesses of 1-3/4" and delivers a 3/4" latch throw with a center case measuring 8" x 2-3/4" x 2-3/8" and a product projection of 3-13/16".

Professional Features & Benefits

• 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.
• ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3 2014 Grade 1 certification, the highest industry standard for commercial exit devices, along with ANSI/UL 305 and CAN/ULC-S132 listings.
• Wide Stile, 4 ft (48") Push Pad: Heavy-duty wide stile push pad spanning 48" provides reliable, full-width actuation for high-traffic commercial and institutional applications.
• Precise Dimensional Specifications: Features a 3/4" latch throw, 8" x 2-3/4" x 2-3/8" center case dimensions, 3-13/16" product projection, and accommodates 1-3/4" door thickness for accurate installation planning.
• Smooth Mechanism Case (98 Series): The 98 Series smooth mechanism case offers a refined architectural aesthetic while delivering the same heavy-duty performance as the grooved 99 Series case.
• Non-Handed Design: Non-handed configuration simplifies specification and installation, reducing inventory requirements and installation complexity across multi-door projects.
• Fasteners Included: Ships with fasteners for wood or metal doors 1-3/4" and 2-1/4" thick, streamlining installation without the need for additional hardware procurement.
• Field-Configurable & Retrofit-Ready: A variety of field-configurable options are available, including CDSI/HDSI security dogging indicators, QEL electronic latch retraction, and electronic switches (Request to Exit and Latchbolt Monitoring) for access control integration.
• Upgrade Options Available: Compatible 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), CX (CHEXIT delayed egress meeting NFPA and IBC requirements with 15-second delay), and XP (patented 2-piece latchbolt design) upgrade 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 - 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: 9875-4ft
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• Dogging Configuration: Less Dogging
• 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 Properties Requiring Fire-Rated Egress
• Retail Establishments with High-Traffic Exit Requirements

Delayed Egress Compliance

The Von Duprin 9875F-4FT is compatible with the CX (CHEXIT) delayed egress upgrade, which meets NFPA and IBC requirements for delayed egress applications. This configuration 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 98/99 Series mortise exit devices are certified to ANSI/BHMA A156.3 2014 Grade 1 standards and carry ANSI/UL 10C, ANSI/UL 305, CAN/ULC-S104, and CAN/ULC-S132 listings, reflecting a commitment to the highest levels of safety and performance. The 9875F-4FT is purpose-built for demanding institutional environments—schools, hospitals, and government facilities—where dependable, fire-rated egress hardware is non-negotiable. With field-configurable options, retrofit kit compatibility, and a broad range of trim and function choices, Von Duprin delivers the flexibility and reliability that commercial door hardware professionals demand.