Von Duprin 3347A-EO Concealed Vertical Rod Exit Device, Exit Only Less Bottom Rod, Narrow Stile, Grade 1

Von Duprin 3347A-EO Concealed Vertical Rod Exit Device, Exit Only Less Bottom Rod, Narrow Stile, Grade 1

33A Series Concealed Vertical Rod Exit Device for Narrow Stile Single and Double Doors

The Von Duprin 3347A-EO is a commercial-grade concealed vertical rod exit device from the 33A Series, engineered for exit-only applications and supplied less bottom rod. Designed to fit door stiles as narrow as 2-1/8" (44 mm) for metal doors and as narrow as 4" (102 mm) for wood door stiles, this device is UL listed for panic exit hardware and meets ANSI A156.3 – 2001 Grade 1 standards. The 3347A features a grooved case and is non-handed except when the SS (signal switch) option is used, offering flexible installation across a wide range of single and double door configurations. The device centerline is set at 39-13/16" (1006 mm) from finished floor, and the deadlocking anti-friction top and bottom bolt delivers a 5/8" (16 mm) throw for reliable latching performance.

Professional Features & Benefits

• Narrow Stile Compatibility: Fits metal door stiles as narrow as 2-1/8" (44 mm) and wood door stiles as narrow as 4" (102 mm), making it ideal for narrow stile door applications.
• Door Size Coverage: Available in device lengths for 3' doors (660 mm to 914 mm) and 4' doors (813 mm to 1219 mm), with device lengths of 2' for each size range.
• Precise Dimensional Specifications: Center case dimensions of 8-13/16" x 2-13/32" x 1-9/16" (208 mm x 62 mm x 40 mm); mechanism case dimensions of 2-1/4" x 2-1/4" (57 mm x 57 mm); top & bottom latch dimensions of 3-3/4" x 1-1/2" x 1" (89 mm x 38 mm x 25 mm).
• Adjustable Vertical Rods: Round 2-piece adjustable rods with top rod adjustable from 6'8" (2027 mm) to 8'4" (2533 mm) and bottom rod adjustable from 35-5/8" (905 mm) to 49-5/8" (1260 mm); extension rod kits available for doors over 8'4" (2533 mm).
• Pushbar Projection: Pushbar neutral projection of 3-13/16" (97 mm) and pushbar depressed projection of 3-1/16" (78 mm) for ergonomic, code-compliant egress.
• Deadlocking Anti-Friction Latch: Top and bottom bolt with 5/8" (16 mm) throw provides secure, reliable latching with anti-friction design for smooth operation.
• Hex Key Dogging: Hex key dogging configuration allows the pushbar to be held in the depressed position for high-traffic or prop-open applications.
• Included Fasteners: Includes 1-3/4" (44 mm) and 2-1/4" (57 mm) wood and metal door fasteners; #425 SNB furnished standard for end case; #325 SNB furnished standard for EO (exit only) device.
• UL Listed & Grade 1 Certified: UL listed for panic exit hardware and ANSI A156.3 – 2001 Grade 1 certified for demanding commercial applications.
• Non-Handed Design: Non-handed except when the SS (signal switch) option is used, simplifying specification and installation across varied door configurations.

Technical Specifications

• Product Group: Exit Devices and Trim
• Series: 33 Series
• Grade: Grade 1
• Fasteners: Includes 1-3/4" and 2-1/4" wood/metal door fasteners, SNB included
• Product Subgroup: Exit Devices - Vertical Rod
• Product Type: Exit Devices - Concealed Vertical Rod
• Subcategory: Concealed Vertical Rod Exit Devices
• Latch Throw: Deadlocking anti-friction top & bottom bolt 5/8" throw
• Commercial/Residential: Commercial
• Device Centerline from Finished Floor: 39-13/16"
• Stile Type: Narrow Stile
• MAP Policy: Yes
• Product Model: 3347A-EO
• Product Function: EO
• Door Hand Direction: Non-Handed
• Door Thickness Range: 1-3/4"
• Dogging Configuration: Hex Key Dogging
• Product Dimension: 8-3/16" x 1-9/16" x 2-13/32"
• Product Projection: 3-13/16"
• Product Style: Push Pads
• 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 concealed vertical rod exit devices are engineered to meet the rigorous demands of commercial door hardware applications, with the 3347A-EO achieving ANSI A156.3 – 2001 Grade 1 certification and UL listing for panic exit hardware. The grooved case construction, deadlocking anti-friction latch bolt, and adjustable rod system deliver dependable performance across a wide range of door sizes and stile configurations. Engineered for demanding commercial environments where code compliance, durability, and reliable egress are essential.