Von Duprin 5575-4ft Narrow Stile Crossbar Mortise Lock Exit Device, 4ft Grade 1, Field Reversible

Von Duprin 5575-4ft Narrow Stile Crossbar Mortise Lock Exit Device, 4ft Grade 1, Field Reversible

Classic Narrow Stile Crossbar Exit Device with Mortise Lock for Single and Double Door Applications

The Von Duprin 5575-4ft is a 4-foot narrow stile crossbar mortise lock exit device from the renowned 55 Series, engineered for single and double door applications in commercial environments. This device features a field-reversible 7500 Mortise lock that can be reversed without removing the lock from the door, and includes a non-handed auxiliary bolt for deadlocking along with a faceplate with an adjustable bevel. Rated ANSI/BHMA A156.3, 2008 Grade 1 and UL listed for accident hazard installations, the 5575-4ft is available in a 48" product size and is field sizeable for versatile installation. Wood doors require the 589 cover plate, and the device is specified for 2-1/4" doors with a door thickness range of 1-3/4".

Professional Features & Benefits

• 4-Foot Narrow Stile Design: Available in a 48" (4ft) length that is field sizeable for single and double door applications, offering installation flexibility across a range of commercial openings.
• Precise Component Dimensions: Hinge stile case and lock stile case each measure 7-1/4" x 1-1/4" x 2-1/4", with a product projection of 3-3/4" and a latch throw of 1/2" for reliable mortise lock engagement.
• Field-Reversible Mortise Lock: The 7500 Mortise lock is field reversible without removing the lock from the door, simplifying handing changes and reducing installation time on the job site.
• Non-Handed Auxiliary Bolt: Includes a non-handed auxiliary bolt for deadlocking and a faceplate with an adjustable bevel, enhancing security and adaptability for varied door preparations.
• ANSI/BHMA Grade 1 Certified: Meets ANSI/BHMA A156.3, 2008 Grade 1 certification, along with ANSI/UL 305, CAN/ULC-S132, and fire-rated configurations meeting ANSI/UL 10C and CAN/ULC-S104 standards.
• Hex Key Dogging Configuration: Features hex key dogging for convenient hold-open capability, suitable for high-traffic commercial applications.
• Versatile Device Type Options: The 55 Series supports rim (surface-mounted vertical rods — type 27), concealed vertical rods (type 47), and mortise locks (type 75), with fire-rated versions available by adding the “-F” suffix.
• Extensive Options and Accessories: Compatible with E8875 electrified option for access control or fire alarm system integration, RX door monitoring switch, and KN knurling on crossbars for tactile hazard warnings. Accessories include mullions, power transfers, and strikes.
• Multiple Trim Functions Available: Supports Classroom, Dummy, Exit Only, Passage, and Storeroom functions; popular 990 pull trim includes all five functions as standard configurations.
• Fastener Inclusion: Includes screw pack for 1-1/4" and 2-1/4" thick metal/wood doors for straightforward installation on common door types.

Technical Specifications

• Product Group: Exit Devices and Trim
• Series: 55 Series
• Grade: Grade 1
• Fasteners: Screw pack for 1-1/4" and 2-1/4" thick medal/wood doors.
• Product Subgroup: Exit Devices - Mortise
• Product Type: Exit Devices - Mortise
• Subcategory: Mortise Exit Devices
• Latch Throw: 1/2"
• Commercial/Residential: Commercial
• Stile Type: Narrow Stile
• Door Hand Direction: Field Reversible
• Door Thickness Range: 1-3/4"
• Product Size: 48"
• Dogging Configuration: Hex Key Dogging
• Product Dimension: 7-1/4" x 1-1/4" x 2-1/4" (Hinge Stile Case), 7-1/4" x 1-1/4" x 2-1/4" (Lock Stile Case)
• Fire Rating: No
• Product Projection: 3-3/4"
• 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
• Historical and Retro-Inspired Architecture

Why Choose Von Duprin Quality?

Von Duprin exit device products deliver professional-grade reliability backed by ANSI/BHMA A156.3, 2008 Grade 1 certification and UL listing for accident hazard installations. The 5575-4ft features a field-reversible mortise lock, non-handed auxiliary deadlocking bolt, and precise 48" field-sizeable construction engineered for demanding commercial applications. With support for multiple trim functions, optional electrified configurations, and compatibility with access control and fire alarm systems, Von Duprin 55 Series devices are a trusted solution where dependable performance and code compliance are essential.