Von Duprin 8875-4FT 4 ft Wide Stile Crossbar Mortise Exit Device with Hex Key Dogging

Von Duprin 8875-4FT 4 ft Wide Stile Crossbar Mortise Exit Device with Hex Key Dogging

Commercial-Grade 88 Series Wide Stile Mortise Exit Device for Single and Double Door Applications

The Von Duprin 8875-4FT is a 4 ft (48") wide stile crossbar mortise exit device from the trusted 88 Series, engineered for demanding commercial applications on single or double doors. Designed to fit stock hollow metal doors with 86 cutouts and door stiles as narrow as 4-3/4" (121 mm), this device features a 3/4" (19 mm) anti-friction latch bolt that is field reversible without removing the lock from the door. The 88 Series carries ANSI/BHMA A156.3, 2008 Grade 1 certification and is UL listed, making it a reliable choice for code-compliant egress solutions in commercial environments. Hex Key Dogging and a non-handed design add operational flexibility across a wide range of door configurations.

Professional Features & Benefits

• Wide Stile Compatibility: Fits door stiles as narrow as 4-3/4" (121 mm) and accommodates stock hollow metal doors with 86 cutouts, ensuring broad compatibility with standard commercial door preparations.
• 48" Crossbar Length: Available in a 4 ft (48") length that is field sizeable for single and double door applications, providing installation flexibility on the job site.
• Anti-Friction Latch Bolt: Equipped with a 3/4" (19 mm) anti-friction latch bolt that is field reversible without removing the lock from the door, simplifying handing changes and service.
• Non-Handed Design: The non-handed auxiliary bolt for deadlocking and overall non-handed configuration allows use on either hand of door without special ordering, reducing inventory complexity.
• Hex Key Dogging: Standard hex key dogging allows the crossbar to be held in the retracted position for high-traffic periods, improving convenience in appropriate applications.
• ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3, 2008 Grade 1 standards as well as ANSI/UL 305 and CAN/ULC-S132, confirming compliance with rigorous commercial performance and safety requirements.
• Electric Locking Options Available: Electric locking or unlocking options, including the E8875 option, allow the device to pair with access control systems, fire alarm systems, or remote switching stations for integrated security solutions.
• Versatile Trim & Function Options: Supports multiple trim functions including Classroom, Dummy, Exit Only, Passage, and Storeroom. Popular 990 pull trim comes standard with five selectable functions. TP and K functions are field selectable via a set screw in the mortise lock body.
• Monitoring Option (RX): Optional RX switch monitors door opening status; when the push bar is depressed, a signal is sent to a monitoring device for integrated building management.
• Knurling Option (KN): Optional knurling on crossbars provides a tactile warning to indicate doors leading to hazardous areas such as stairs, loading platforms, or boiler rooms.

Technical Specifications

• Product Group: Exit Devices and Trim
• Series: 88 Series
• Grade: Grade 1
• Device Centerline: 39-13/16"
• Fasteners: All necessary mounting fasteners are included
• Product Subgroup: Exit Devices - Mortise
• Subcategory: Mortise Exit Devices
• Latch Throw: 3/4"
• Product Type: Exit Devices - Mortise
• Commercial/Residential: Commercial
• Stile Type: Wide Stile
• Wood Door Compatible: No
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• Dogging Configuration: Hex Key Dogging
• Fire Rating: No
• Product Style: Cross Bars
• Product Category: Exit Devices and Trim
• Department: Door Hardware

Professional Applications

• Commercial Office Buildings
• Educational Facilities
• Healthcare Institutions
• Retail Establishments
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• Government and Municipal Buildings

Why Choose Von Duprin Quality?

Von Duprin 88 Series mortise exit devices are built to meet the most demanding commercial egress requirements, carrying ANSI/BHMA A156.3, 2008 Grade 1 certification along with ANSI/UL 305 and CAN/ULC-S132 compliance. The 8875-4FT features a field-reversible 3/4" anti-friction latch bolt, non-handed operation, and a wide range of trim and electronic options that adapt to virtually any facility need. Engineered for commercial applications where dependable, code-compliant performance is essential, Von Duprin exit devices deliver the reliability that security professionals trust.