Von Duprin 33A/35A Series Concealed Vertical Rod Exit Devices

Key Features

• Narrow stile push pad design suitable for aluminum, hollow metal, and wood doors with slim profiles, while still meeting ANSI/BHMA Grade 1 standards.
• Concealed vertical rod construction with top and bottom latching hidden inside the door for clean sightlines and reduced tampering.
• 33A grooved case and 35A smooth case options, mechanically identical but offering distinct aesthetics to match project design preferences.
• Fire‑rated models (‑F versions) for labeled openings, supplied without dogging to maintain positive latching and comply with fire codes.
• Multiple bar lengths for 3' and 4' doors (and field‑cut ranges such as 28"–36" or 32"–48"), giving flexibility across standard door sizes.
• Architectural finishes including satin chrome, aluminum, dark bronze, and black anodized aluminum (711) to coordinate with frames and hardware.

Key Benefits

• High security and stability: Two‑point concealed latching at the head and sill improves resistance to forced entry and keeps tall doors properly aligned.
• Architectural appearance: Concealed rods and compact mechanism cases create a clean, low‑profile look that suits modern interiors and storefronts.
• Life‑safety compliance: Single‑motion operation via the push pad meets panic hardware requirements for high‑occupancy facilities.
• Versatile options: Fire‑rated and non‑rated devices, multiple finishes, and compatibility with a wide range of Von Duprin trims and electrified options allow tailoring to each opening.
• Durable performance: Heavy‑duty internal components and Grade 1 construction deliver long service life in K‑12 schools, universities, healthcare, and commercial buildings.

Applications

• K‑12 and higher education: Classroom wings, cross‑corridor openings, and exterior pairs where narrow stile, concealed hardware is preferred.
• Healthcare facilities and hospitals: Patient corridors and cross‑corridor fire doors needing quiet, reliable egress and clean hardware lines.
• Commercial offices and government buildings: Lobbies, stair towers, and interior fire doors requiring robust panic hardware with refined aesthetics.
• Retail, mixed‑use, and hospitality: Paired doors on public access points where design and security must both be maintained.

Popular Von Duprin 33A/35A Concealed Vertical Rod Exit Devices

• Von Duprin 3347AEO‑F‑4‑100‑711 Fire Rated Concealed Vertical Rod Exit Device: The 3347AEO‑F‑4‑100‑711 is a fire‑rated 33A Series concealed vertical rod exit device, exit‑only, for 32"–48" bar widths in a black anodized aluminum (711) finish. It combines two‑point concealed latching with a narrow stile grooved case, making it ideal for modern, design‑driven fire‑rated pairs in schools, offices, and public buildings.
• Von Duprin 3347AEO‑F‑4 Fire Rated Concealed Vertical Rod Exit Device: The 3347AEO‑F‑4 is a fire‑rated 33A/35A Series CVR exit device, exit‑only, for 32"–48" bar widths. It provides Grade 1 concealed vertical rod latching for labeled double doors, supporting secure, code‑compliant egress on 4' wide openings in corridors, stairwells, and cross‑corridor locations.
• Von Duprin 3347AEO‑4 Concealed Vertical Rod Exit Device: The 3347AEO‑4 is a non‑fire‑rated concealed vertical rod exit‑only device for 32"–48" bar widths. It offers the same narrow stile, grooved‑case design and concealed top and bottom rods, suited for non‑rated pairs where multi‑point latching and a clean, concealed hardware look are required.

QualityDoor.com is a veteran‑owned, GSA‑contracted leader in commercial door hardware, with decades of experience supplying Von Duprin 33A/35A Series concealed vertical rod exit devices, trims, and accessories. Contractors, locksmiths, and facility managers rely on QualityDoor.com for genuine Von Duprin hardware, competitive pricing, and fast shipping on in‑stock 33A/35A models. With knowledgeable technical support and a curated selection of panic hardware, QualityDoor.com makes it easier to specify and maintain safe, secure, and code‑compliant egress solutions across schools, hospitals, offices, and public buildings.