If you've spent any time maintaining commercial doors, you've worked on a Von Duprin 88 Series device. It's been in continuous production since the 1950s and is probably the most recognizable crossbar exit device in North America. The Von Duprin 88 Series catalog covers rim, surface vertical rod, concealed vertical rod, and mortise configurations, all wide-stile, all carrying ANSI A156.3 Grade 1 certification and UL listing for panic exit hardware. It ships with a 42-inch field-sizeable crossbar and a 3/4-inch throw latch bolt. Knowing the model lineup and how the parts are structured is what keeps ordering accurate and returns to zero.

The Device That Put Von Duprin on the Map

That's not marketing copy. Contractors and locksmiths who have been in the field for decades will tell you the 88 Rim device was the product that established Von Duprin as the institutional standard. It's been on egress doors in schools, hospitals, government buildings, and correctional facilities for over 70 years because it solves a specific problem extremely well: it handles serious mechanical abuse without needing electronics to do it.

There are no electrified options in the 88 Series. No QEL, no MEL, no Allegion Connect integration. That's a design decision, not a gap. In correctional facilities and behavioral health units, you don't want electrified device components that can be targeted or defeated. You want a mechanical crossbar that's built heavy and stays functional under sustained physical force. That's what the 88 delivers, and it's why it still gets specified in environments where the 98/99 Series, with all its electronic integration options, simply isn't the right tool.

One thing worth knowing before we get into the models: the 88 is the wide-stile version of Von Duprin's crossbar line. The 55 Series is the narrow-stile version, commonly used in historic renovations and retro architecture. Both carry the same ANSI/BHMA A156.3 Grade 1 rating. If you're working on a wide-stile door, you're in the 88 catalog. If it's a narrow-stile, you're in the 55 catalog. Parts don't cross between them.

Every Model, Explained Like a Human Being

88 (Rim) and 88-F (Rim)

This is the original. Single-point latch bolt engagement at the frame-side rim strike. Field reversible, which means you can flip it to handle either hinge side without stocking two versions. It ships with the 299 rim strike and all mounting hardware. The non-fire-rated version uses hex key dogging with a 5/32-inch key. The fire-rated 88-F removes the dogging function because a fire door has to latch every single time it closes, no exceptions.

8827 Series (SVR) and 8827-F Series (SVR)

Surface vertical rod for double door openings without a center mullion. The top rod hits a strike at the door header, the bottom rod hits the floor or threshold. It ships with three strikes: the 299, the 304L standard vertical rod bottom strike, and the 248L-4 panic vertical rod bottom strike. Fits hollow metal doors with 86 or 161 cutouts, and works on door stiles as narrow as 3-1/2 inches.

There's one thing on the 8827 that trips people up. The center case for a non-fire-rated 8827 is part number 050415. The fire-rated 8827-F uses a completely different top latch assembly, and the fire-rated version also needs the plunger release bracket (107765) to work correctly. If you order the non-fire-rated center case for a fire-rated device, you'll know about it when the bottom latch starts dragging on the floor. Don't skip that detail.

8847-F Series (CVR)

Concealed vertical rod, fire-rated only. The rod hardware routes inside the door so you don't see it on the surface. Gets specified when surface rods aren't architecturally acceptable but the project still calls for a wide-stile crossbar device.

8875 (Mortise) and 8875-F (Mortise)

The mortise device version of the 88 Series integrates the 7500 mortise lock body, the same body used in the 9975 mortise device from the 98/99 Series. That body has been the Von Duprin mortise standard since around 1977 and measures 5-7/8 inches high by 4-1/2 inches deep by 1 inch thick. If you need no-cylinder operation on the 8875, you specify the BE (blank escutcheon) suffix. Dummy trim adds DT. Matching dummy trim for the knob version is 8875K-DT.

The Trim Suffix System, Explained Simply

This is where most ordering mistakes happen. The suffix at the end of the model number tells you the trim function, and getting it wrong means the outside hardware doesn't work the way the opening requires.

• BE means blank escutcheon, no cylinder, trim is always operable
• DT is dummy trim, non-functional, used for aesthetic matching on the inactive door leaf
• NL is night latch, outside trim locks and unlocks with a key
• TP is thumbpiece outside trim
• L / L-BE is lever function, with or without cylinder
• K / K-BE is knob function. Still available in the catalog but rarely specified anymore because knob hardware doesn't comply with ADA door hardware requirements on most commercial egress doors
• T / T-BE is thumbturn function

One thing specifically about the 8827 SVR: you can't get the NL function just by specifying 88NL on an SVR device. On the 8827 and 8827-F, night latch is only available through the 370 Series trim configured for NL function during installation, or by ordering the TP-NL or K-NL designation at time of order. If you miss it during spec, you'll be back-ordering the right trim assembly on a job that should have shipped complete.

The Parts You Actually End Up Replacing

The Von Duprin 88 Series catalog at Security Parts organizes components by category within each model. Here's how each category breaks down and what sits inside it.

Crossbars and Crossbar Hardware

Ships at 42 inches standard, cut to door width in the field. The crossbar reinforcement kit (050459) adds structural support on high-use doors. Tube attaching wedges (090020) and rings (090021) secure the crossbar to the device body. Wedgetite screws (090008 and 090081) and dog screws (090004 and 090083) are the highest-turnover mechanical components on heavily used 88 Series devices.

Lever Arms, Axles, and Security Pins

Lever arm replacement is almost always caused by the dogging screw stripping out. The arm assembly includes the wedge, wedge ring, wedgetite screw, and dog screw. Right-hand lever arm kits are 050438 and 050440. Axles come in pairs (090006) or packs of 10 (090082). Axle security pins are available in a standard pack (090007) or a pack of 50 (033022), which makes more sense if you're servicing multiple 88 Series devices across a large facility.

Vertical Rods for the 8827

The top rod kit for standard 6'8" to 8' doors is 050457. Extension kits cover 8-to-10 foot doors (051705) and 10-to-12 foot doors (050634). Bottom rod kit is 050458. Know the door height before ordering any rod kit because these don't cross between sizes.

End Case and Center Case Components

End case kits come in multiple configurations: 050435 and 050437. End case springs are 090003 in pairs or 090080 in packs of 10. Spring stop kits are 050451 and 050452. For the rim device center case, the 050409 active case applies to EO, DT, and NL trim functions only. Lever, knob, and thumbpiece versions each use a different case specification.

Strikes

Rim strikes: 1609 and 1606. Vertical rod bottom strikes: 304L standard, 301L fire-rated, 248L-4 panic-rated. Strike selection depends on device configuration and fire rating status.

Mechanical Options

The HD suffix covers hex dogging. The WS suffix is the windstorm option for installations in hurricane-rated or high-wind-load door assemblies.

Why the Right Catalog Source Actually Matters for the 88 Series

Here's a real problem that happens all the time with the 88 Series. A facility manager searches for a center case kit under "88 Series" at a general distributor, orders it, and gets a part that doesn't fit the trim function on the device being serviced. That's because the 88 EO center case and the 88 TP center case are different parts. Most general catalogs don't surface that distinction clearly enough to prevent the mistake.

Security Parts is built around the model-first logic that actually reflects how the 88 Series catalog works. Every device configuration has its own page. Every parts category within that configuration is separated so you're not sorting through a flat list trying to figure out what applies to your specific device. The interactive diagram on each model page shows the full assembly so you can identify the failing component visually and confirm the part number before anything goes in the cart.

The catalog also covers legacy parts for devices that have been running since the 1980s and 1990s. Most commercial facilities aren't replacing 88 Series devices on a schedule. A device installed in 1988 might still be running the original mechanism and just needs a lever arm or an end case spring. That cross-generation depth is part of what Security Parts has built over 23 years in commercial door hardware.

Same-day shipping on stocked components from US warehouses. Free shipping on orders over $450. If you're not sure whether a specific part applies to the device generation you're working on, call 845-935-0301 or email sales@securityparts.com before the order goes through, not after. The full Von Duprin catalog covers every other active series through the same model-specific structure if you're managing a facility with mixed Von Duprin hardware.

Conclusion

The Von Duprin 88 Series has earned its place in commercial buildings since the 1950s by doing one thing consistently: holding up mechanically where other devices eventually fail. Wide-stile crossbar construction, ANSI A156.3 Grade 1 certification, and UL-listed panic exit hardware in four configurations from rim to mortise. No electrified complexity. No electronics to fail in an environment that punishes hardware daily. The catalog is deeper than most people realize, with model-specific trim functions, configuration-dependent center cases, and rod kits that vary by door height. Sourcing from the Von Duprin 88 Series catalog at Security Parts gives you model-specific diagrams, organized part categories, and same-day shipping so the right component gets there before the door goes out of service.

FAQs

What applications is the Von Duprin 88 Series designed for?

 Heavy-duty commercial and institutional environments including correctional facilities, behavioral health units, and government buildings where mechanical durability matters more than electronic integration.

What configurations does the 88 Series cover?

 Rim (88/88-F), surface vertical rod (8827/8827-F), concealed vertical rod (8847-F), and mortise (8875/8875-F). Fire-rated versions use the "-F" suffix and remove the dogging function.

Does the 88 Series have electrified options?

 No. It's a mechanical-only line by design. Electrified options like QEL, MEL, and Allegion Connect are available on the 98/99 Series, not the 88.

What's the difference between the 88 and 55 Series?

 Both are crossbar exit devices with Grade 1 certification. The 88 is wide-stile for standard commercial doors. The 55 is narrow-stile, commonly specified in historic or retro-architecture buildings.

What crossbar does the 88 Series ship with?

 A 42-inch standard crossbar that's cut to door width in the field during installation. Crossbar reinforcement kits are available for high-use applications.

Where do I find Von Duprin 88 Series parts with interactive diagrams?

 Security Parts carries the complete Von Duprin 88 Series catalog with model-specific diagrams, same-day shipping on stocked parts, and pre-order support at 845-935-0301.