Von Duprin 9875-4FT 4 ft Smooth Case Wide Stile Mortise Exit Device with Hex Key Dogging

Von Duprin 9875-4FT 4 ft Smooth Case Wide Stile Mortise Exit Device with Hex Key Dogging

Heavy-Duty Commercial Mortise Exit Device for Institutional and High-Traffic Applications

The Von Duprin 9875-4FT is a 4-foot (48") smooth case, wide stile mortise exit device engineered for demanding institutional environments including schools, hospitals, and government buildings. Part of the renowned 98/99 Series, this device features a smooth mechanism case and wide stile heavy-duty push pad design, certified to ANSI/BHMA A156.3 2014 Grade 1 standards. Designed for single and double doors with mullion, the 9875-4FT accommodates 1-3/4" door thickness and delivers a 3/4" latch throw, making it a reliable solution for high-use commercial applications. The device is non-handed, offering flexible installation across a wide range of door configurations.

Professional Features & Benefits

• Wide Stile Heavy-Duty Push Pad: Smooth mechanism case design with wide stile construction provides a robust, architectural-grade push pad solution suited for institutional and commercial applications.
• 48" Product Size: The 4-foot (48") case length accommodates wide door openings, ensuring full-width coverage for compliant egress on large commercial doors.
• Door Thickness Compatibility: Designed for 1-3/4" door thickness with fasteners included for wood or metal doors 1-3/4" and 2-1/4" thick, providing versatile installation options.
• 3/4" Latch Throw: Delivers a positive 3/4" latch throw for secure latching performance in mortise exit device applications.
• Center Case Dimensions: Compact center case measuring 8" x 2-3/4" x 2-3/8" with a product projection of 3-13/16" for a clean, professional installation profile.
• Hex Key Dogging: Hex key dogging configuration allows the latchbolt to be held in the retracted position for high-traffic periods, improving convenience without compromising security.
• Non-Handed Design: The device is non-handed (except when specific options such as SD, -2, or SS are applied), simplifying specification and reducing inventory requirements.
• ANSI/BHMA Grade 1 Certified: Certified to ANSI/BHMA A156.3 2014 Grade 1, ANSI/UL 305, and CAN/ULC-S132, with fire-rated configurations also meeting ANSI/UL 10C and CAN/ULC-S104 standards.
• Field-Configurable Options: A broad range of field-configurable options and retrofit kits — including QEL electronic latch retraction, CDSI/HDSI security dogging indicators, and electronic switches (RX, LX) — allow the device to adapt to evolving facility needs.
• ADA and Delayed Egress Upgrade Paths: Upgradeable with AX option (certified to 5 lb. force ADA requirements per 2010 ADA Chapters 404.2.7 and 30934) or CX/CHEXIT for NFPA and IBC delayed egress compliance with 15-second hold and nuisance alarm.

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: 9975-4ft
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• 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
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential and Mixed-Use Properties

Delayed Egress Compliance

The Von Duprin 9875-4FT is upgradeable with the CX/CHEXIT option, which meets NFPA and IBC requirements for delayed egress. This configuration keeps doors secure for 15 seconds after a request to exit while a nuisance alarm sounds, providing code-compliant delayed egress for facilities requiring controlled exit management.

Why Choose Von Duprin Quality?

Von Duprin mortise exit devices are engineered to the highest industry standards, with the 98/99 Series certified to ANSI/BHMA A156.3 2014 Grade 1, ANSI/UL 305, and CAN/ULC-S132 — and to ANSI/UL 10C and CAN/ULC-S104 in fire-rated configurations. The 9875-4FT smooth case design and wide stile heavy-duty push pad construction are purpose-built for institutional environments where reliability under high use and abuse is essential. With a broad ecosystem of field-configurable options, retrofit kits, and upgrade paths, Von Duprin delivers a future-ready exit device solution for demanding commercial applications.