Von Duprin parts cover one of the most extensive commercial door hardware catalogs in North America. The brand's history starts in 1908 when Von Duprin developed the first panic exit device following the Iroquois Theatre fire in Chicago, which killed 602 people and directly triggered building code requirements for panic egress hardware. More than a century later, Von Duprin devices are still the dominant specification in hospitals, schools, government buildings, and correctional facilities across the country. Maintaining that hardware correctly requires knowing which series is installed, which component has failed, and which part number applies to your specific device generation.

This guide covers every active Von Duprin series with direct links to the parts pages, the component categories inside each series, and the facts that make ordering accurate the first time.

Why Part Number Precision Matters More Than Brand Recognition

Here's the thing most facility managers and contractors learn the hard way: Von Duprin part numbers are series-specific and in many cases configuration-specific within the same series. A dogging spring from the 22 Series won't fit a 75 Series device. A center case kit for the 98/99 rim configuration is a different part from the center case kit for the 98/9947 CVR device. ANSI A156.3 Grade 1 certification, which Von Duprin's top-tier devices carry, requires each component to survive 2 million operation cycles. That standard is built into the manufacturing tolerances. Getting a close-enough substitute wrong by one spec can undermine compliance on a fire-rated door and create real liability.

Always start with the model number stamped on the mechanism case or baseplate. That number drives every sourcing decision below.

Von Duprin 98/99 Series: The Flagship Exit Device

The 98/99 Series is the most widely specified panic bar hardware in commercial construction. The 98 carries a smooth mechanism case, the 99 a grooved case. Every internal component is interchangeable between the two, which means a 99 Series center case kit works on a 98 Series device without modification.

Configurations span rim, surface vertical rod (SVR), concealed vertical rod (CVR), wide door cable (WDC), and the 9875/9975 mortise exit device, which integrates the 7500 mortise lock body into a panic hardware chassis. This versatility is why the series appears in virtually every building type.

Key part categories include center case kits and mounting packages, dogging assemblies (hex dogging shafts, cylinder dogging kits, dogging conversion kits, dogging springs, dogging hooks and adaptors), mechanism cases, push bar guides, baseplate and cover plate hardware, end cap kits, latchbolt pins, control link pin kits, fire kits (LBR/LBL latch retrofit for fire-rated devices), vertical rod and latch assemblies, and the 7500 mortise lock component tree for mortise device configurations.

The electrified options catalog on the 98/99 is the deepest in the Von Duprin line: quiet electric latch retraction (QEL) modular conversion kits, motorized electric latch retraction (MEL), Chexit delayed egress assemblies, standard electric latch retraction (ELR) components, Allegion Connect integration modules, signal switch kits (RX/LX), and electric power transfer hardware. Trim covers lever, thumbturn, thumbpiece, night latch, and dummy trim functions across all configurations.

Von Duprin 22 Series: Grade 1 for Everyday Commercial Openings

The 22 Series carries ANSI A156.3 Grade 1 certification and handles medium to lower-traffic egress doors, employee entrances, parking stairwells, multi-family corridors, and back-of-house retail openings. Available in rim and SVR configurations.

Parts include center case kits, dogging assemblies, baseplate components, push bar kits, top and bottom latch kits, pullman latch kits, latch case cover kits, end cap kits, fire kits, vertical rod and latch hardware, and the alarm kit disarming label and retainer nut for ALK-equipped devices. Electrified options cover ALK alarm kits, QEL modular conversion kits, MEL motorized latch retraction, and request-to-exit (RX) switch kits including low-current variants. The 22 Series also includes the QM SVR Device Retrofit Kit, which converts older SVR configurations to current specifications without full device replacement.

Von Duprin 33/35A Series: Touchbar Exit Devices

The 33/35A Series replaces the push pad with a continuous touchbar running the full width of the door opening. The 35A adds an integral door position switch. Configurations run from rim and SVR through CVR, WDC, and the 360/E360 control trim variants.

This series carries the second-deepest electrified options catalog after the 98/99: Chexit delayed egress, the E7500 electrified mortise lock, pneumatic (PN) options, Allegion Connect, electric power transfers, and signal switches. Mechanical parts cover center case kits, mechanism case assemblies, dogging components (all variants including hex and cylinder conversion kits), lever arm kits, baseplate and cover plate hardware, cables, EL solenoid and plunger assemblies, EL receptacle connectors, SS housing components, fire latch kits, and push bar hardware. Trim covers lever, lever dummy, night latch, and thumbturn functions.

Von Duprin 55 Series: Mortise Exit Devices

The 55 Series integrates a full mortise lock body with panic egress hardware. It's specified on high-security perimeter doors where the architect or security consultant requires mortise lock integrity alongside code-compliant panic exit. Configurations include rim, CVR, and the 5575 mortise device.

The 7500 mortise lock body is the core of this series. Parts go deep into the mortise lock catalog: latch bolt with axle and spring assemblies, latch bolt axles, cam assemblies (right-hand and left-hand), axle retainers, spring anchors, lift members, lift member channels and levers, center case kits and mounting packages, crossbars, end case kits, lever arm kits, vertical rod components, and strikes. The soffit latch assembly and its mounting hardware are also carried in the 55 Series parts catalog.

Von Duprin 75 Series: Standard Commercial Grade 1

The 75 Series is the go-to specification for standard commercial applications: healthcare facilities, retail, offices, and light institutional openings that need Grade 1 reliability without the full institutional depth of the 98/99. Configurations cover rim, SVR, and CVR.

Parts include center case kits, mechanism case assemblies, center case reinforcing brackets, dogging components, baseplate hardware, lever arm kits, end cap kits, push bar components, vertical rod and latch hardware, and fire kits. Electrified options cover ALK alarm kits, MEL motorized latch retraction, QEL modular conversion kits, Allegion Connect, and RX switch kits. Trim covers lever and lever blank, and thumbturn functions.

Von Duprin 78 Series: Narrow-Stile Exit Devices

The 78 Series was engineered specifically for aluminum frame and all-glass storefront doors, where standard-width exit device bodies simply won't fit. The minimum stile width this series accommodates is 1-3/4 inches, which is exactly what commercial lobby glass doors typically require.

This is the one series where ordering a component from a different line creates a guaranteed misfit. The form factor is fundamentally different from every other Von Duprin device. Configurations run from rim and SVR through CVR and WDC. Parts cover center case kits and mounting packages, baseplate assemblies, cover plate hardware, dogging components (all variants), mechanism case parts, lever arm kits, push bar components, vertical rod and latch hardware, fire kits, end cap kits, and the full electrified options catalog including ALK, MEL, QEL modular conversion, Allegion Connect, and RX switch kits.

Von Duprin 88 Series: Heavy-Duty Abuse-Resistant Hardware

The 88 Series is specified wherever hardware faces deliberate force, misuse, or sustained abuse. Correctional facilities, behavioral health units, secure government floors. It's built heavier throughout, and by design there are no electrified options at the device level. Mechanical integrity is the priority.

Configurations include rim, SVR, CVR, and the 8875 mortise device. The parts catalog is the most mechanically detailed in the Von Duprin line: crossbar kits and reinforcement kits, lever arm kits and axles, axle security pins, dog screws (standard packs and 10-packs), crossbar tube attaching wedges and rings, wedgetite screws, end case kits (multiple configurations), end case springs and spring stop kits, vertical rod kits for standard door heights plus extension kits for 8 to 10 foot and 10 to 12 foot door applications, soffit latch assemblies and mounting packages, bottom guide packages, release guide covers, plunger release brackets, rod connector rivets, backplate conversion kits, and strikes including rim strikes, vertical rod top and bottom strikes, and fire-rated bottom strikes.

Von Duprin 94/95 Series: Concealed Vertical Rod and Mortise

The 94/95 Series handles openings where surface-mounted rods aren't acceptable for aesthetic or security reasons. Hotel corridors, premium healthcare interiors, high-end commercial spaces. The hardware is concealed inside the door. Configurations cover the 94/9547 CVR device and the 9575 mortise device.

Parts are concentrated in latch, rod, and concealment hardware: top and bottom latch kits, latch retrofit kits for non-EL applications, latch mounting bracket kits, latch linkage pin retaining rings, latch link pins and springs, bolt return springs, extension rod kits adjustable from 8 feet 4 inches to 10 feet, ratchet release kits, ratchet lever springs and release screws, rod connecting screws, baseplate link pins, fire latch components including the auxiliary fire latch strike hole plug, center cases, end cap packages, and wood door mounting packages. Electrified options include the E7500 electrified mortise lock and QEL.

Von Duprin Electric Strikes and Mullions

Von Duprin manufactures four electric strike series, each targeting a different security tier and lock compatibility range.

The 5100 Series covers standard commercial cylindrical and mortise lock applications. The 6100 Series is the heavy-duty option for higher-security openings requiring wider lock compatibility. The 6200 Series delivers high-security fail-secure performance, maintaining the locked state during power failure. The 6300 Series offers the widest compatibility range across cylindrical, mortise, and panic hardware applications in a single platform. Parts across all four series include solenoid assemblies, strike plates, cover kits, and mounting hardware, all organized by model on the electric strikes page.

The 54 Series Mullions are the center post components for double door openings where a vertical rod device needs a strike point at the door center rather than the frame. Available in fixed and removable configurations with dedicated parts covering mounting hardware, locking assemblies, and strike components.

Getting the Right Von Duprin Part Without the Guesswork

The size of the Von Duprin catalog is exactly why model-specific sourcing matters so much. Security Parts organizes the full Von Duprin parts catalog by series, then by model within each series, then by component category within each model. Interactive parts diagrams on every model page let you confirm a component visually against the actual device assembly before anything goes to cart.

The platform carries legacy models alongside current-generation hardware. Commercial buildings aren't running uniform recent-vintage hardware across all openings, and the cross-generation depth at Security Parts reflects that reality. Same-day shipping applies to stocked components from multiple US warehouses. Free shipping on orders over $450. Compatibility questions handled before the order ships at 845-935-0301 or sales@securityparts.com.

Conclusion

Von Duprin panic hardware has been protecting commercial egress since 1908. The parts catalog that supports it today is one of the deepest in commercial door hardware, spanning eleven active exit device series, four electric strike lines, and a full range of electrified upgrade options. Getting the right component starts with the model number on the device, then the correct series page, then the visual diagram that confirms the part before ordering. Start at the full Von Duprin parts catalog, select your series, and use the diagram to get it right the first time.

FAQs

What are Von Duprin parts used for?

 Von Duprin parts are replacement components for commercial panic exit devices, electric strikes, and egress hardware. They're used in maintenance, repair, and upgrade of exit devices across schools, hospitals, government buildings, and correctional facilities.

Are Von Duprin 98 and 99 Series parts interchangeable?

 Yes. The smooth-case 98 and grooved-case 99 use identical internal components. Center case kits, dogging assemblies, latch hardware, and mechanism cases all cross between the two without modification.

What series do I need for a glass storefront door?

The 78 Series. It's specifically built for narrow-stile aluminum frame and all-glass doors with stile widths as narrow as 1-3/4 inches. Parts from standard-width series are not compatible.

What makes the 88 Series different from other Von Duprin exit devices? 

The 88 Series is built for abuse-resistant, high-security applications including correctional facilities and behavioral health units. It has no electrified options by design, prioritizing heavy-duty mechanical construction throughout.

What is ANSI A156.3 Grade 1 and why does it matter for Von Duprin parts?

 ANSI A156.3 Grade 1 is the commercial-grade certification requiring exit devices to survive 2 million operation cycles. Most Von Duprin exit device series carry this certification, and replacement parts must maintain the same performance tolerance to keep the assembly compliant.

What electric strike series does Von Duprin make?

 Four series: 5100 for standard commercial applications, 6100 for heavy-duty cylindrical and mortise applications, 6200 for high-security fail-secure configurations, and 6300 for the widest lock compatibility range across cylindrical, mortise, and panic hardware.