Von Duprin 880K-DT Dummy Knob ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$488.00
$356.56
Von Duprin 880K-DT Dummy Knob, Function, Trim for 88 Series Exit Devices

Von Duprin 880K-DT Dummy Knob Exit Device Trim for 88 Series, Heavy Duty Grade 1, Non-Handed

(No reviews yet) Write a Review

Model: 880K-DT-R 26D
Selected Finish is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$488.00
$356.56
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Von Duprin 880K-DT Dummy Knob Exit Device Trim for 88 Series, Heavy Duty Grade 1, Non-Handed

Professional-Grade 880 Series Trim for Von Duprin 88 Series Exit Devices

The Von Duprin 880K-DT is a Heavy Duty, Grade 1 dummy knob exit device trim designed specifically for use with Von Duprin 88 Series exit devices. Constructed from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel, this 880 Series trim delivers exceptional durability and a professional finish for commercial applications. The non-handed design simplifies installation and inventory management, while a product projection of 2 3/4" (70 mm) ensures a consistent, ergonomic profile. Compatible with Rim, Surface Mounted Vertical Rod, Concealed Vertical Rod, and Mortise configurations of the 88 Series, this trim supports both panic and fire rated applications.

Professional Features & Benefits

  • Heavy-Duty Construction: Manufactured from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel for long-lasting performance in demanding commercial environments.
  • Grade 1 Rated: Meets Grade 1 standards, the highest commercial duty classification, ensuring reliable operation in high-traffic facilities.
  • Non-Handed Design: The non-handed configuration eliminates handing concerns during ordering and installation, reducing lead times and simplifying field adjustments.
  • Product Projection: Features a 2 3/4" (70 mm) projection for a consistent, ergonomic knob profile suited to commercial door applications.
  • Broad 88 Series Compatibility: Designed for use with Von Duprin 88 Series exit devices across Rim, Surface Mounted Vertical Rod, Concealed Vertical Rod, and Mortise configurations for versatile installation options.
  • Wide Style Cross Bar Device Support: The 88 Series is a wide style cross bar device available for panic and fire rated applications, and this trim is engineered to complement its full range of configurations.
  • Flexible Function Options: The 880 Series trim line offers multiple available functions including 880DT, 880K, 880NL, and 880TP, with an optional 880EO exit only trim plate also available. To order with the exit device, specify 88EOx880EO.
  • Flexible Field Sizing: The 88 Series features a non-handed design and flexible field sizing, making this trim an adaptable solution for a wide range of door openings.

Technical Specifications

  • Subcategory: Exit Device Trim
  • Series: 88 Exit Trim
  • Grade: Grade 1
  • Duty Level: Heavy Duty
  • Compatibilty: 88 Series Exit Devices
  • Product Group: Exit Devices and Trim
  • Product Subgroup: Exit Device Trim
  • Product Type: Exit Device Trim
  • Commercial/Residential: Commercial
  • Rim Center Line: A 39 13/16 (1011 mm) B 36 13/16 (935 mm)
  • Mortise Lock Center Line: A 39 13/16 (1011 mm) B 38 9/16 (979 mm)
  • Surface Mounted Vertical Rod Center Line: A 39 13/16 (1011 mm) B 38 5/16 (973 mm)
  • Product Model: 880K-DT
  • Product Function: Dummy Knob
  • Door Hand Direction: Non-Handed
  • Product Projection: 2 3/4" (70 mm)
  • 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 exit device trim products deliver professional-grade reliability with heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel construction rated for the most demanding commercial applications. The 880K-DT carries a Grade 1 duty rating and is engineered to integrate seamlessly with the full range of Von Duprin 88 Series exit device configurations, including Rim, Surface Mounted Vertical Rod, Concealed Vertical Rod, and Mortise types. Engineered for commercial environments where dependable performance and code compliance are essential, Von Duprin hardware is a trusted choice for security professionals.

Manufacturer Resources

Von Duprin 88 Series Catalog

Product Specs

Subcategory:
Exit Device Trim
Series:
88 Exit Trim
Grade:
Grade 1
Duty Level:
Heavy Duty
Compatibility:
88 Series Exit Devices
Product Group:
Exit Devices and Trim
Product Subgroup:
Exit Device Trim
Product Type:
Exit Device Trims
Commercial/Residential:
Commercial
Rim Center Line:
A 39 13/16 (1011 mm) B 36 13/16 (935 mm)
Mortise Lock Center Line:
A 39 13/16 (1011 mm) B 38 9/16 (979 mm)
Surface Mounted Vertical Rod Center Line:
A 39 13/16 (1011 mm) B 38 5/16 (973 mm)
Product Model:
880K-DT
Product Function:
Dummy Knob
Door Hand Direction:
Non-Handed
Product Projection:
2 3/4" (70 mm)
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 880K-DT-R 26D – Frequently Asked Questions

1) What does a dummy knob exit trim like the Von Duprin 880K-DT actually do?
The 880K-DT is a pull-only knob for the outside of a door fitted with a Von Duprin 88 Series exit device. The knob does not turn and does not retract the latch, so the opening stays locked from outside at all times and egress happens only by pushing the crossbar from inside. Use it where you want a gripping surface on the exterior face and no outside entry at all. If someone needs to get in from outside with a key, order the nightlatch (880NL) version instead.
2) Do I need to pick a device prep when ordering the 880K-DT dummy knob trim?
Yes, and it is the choice that matters most. The trim is sold in Mortise Prep, Rim Prep, and Vertical Rod Prep, and the prep has to match the 88 Series device already on the door. That is because the centerline of the trim differs by device type: Rim is A 39 13/16 (1011 mm) and B 36 13/16 (935 mm), Mortise lock is A 39 13/16 (1011 mm) and B 38 9/16 (979 mm), and Surface Mounted Vertical Rod is A 39 13/16 (1011 mm) and B 38 5/16 (973 mm). Order the wrong prep and the mounting holes will not line up with the device.
3) Can I use the 880K-DT on a fire rated door?
The 88 Series is a wide style cross bar device available for both panic and fire rated applications, and the 880 trim range is built to complement that full range of configurations, dummy knob included. Since it is a dummy, there is no outside latch retraction to interfere with positive latching.
4) What is the closest dummy-function exit device trim to the Von Duprin 880K-DT from another manufacturer?
The 880K-DT is a dummy knob trim, meaning it provides a fixed exterior grip with no latch retraction. The closest peer by function is the Detex 02BN, a dummy S-lever trim with a blank escutcheon for Value Series exit devices, and the Dexter ED1500T-DUMM-PULL, a dummy function exit device trim with a handle pull plate. The difference is the grip style and device family: the 880K-DT is a knob built for Von Duprin 88 Series devices, the Detex is a lever, and the Dexter is a pull plate handle.
5) I need the outside trim to actually unlock the door with a key, not just be a pull. What should I use instead of the 880K-DT?
The 880K-DT is dummy function, so it will not retract the latch. For key-operated exterior access on an exit device, look at a nightlatch or entry trim instead: the Sargent 704ET is a Grade 1 night latch lever trim with field reversible operation, the Corbin Russwin VT957ET is a nightlatch escutcheon trim for ED5000 Series devices, and the Tell EDELT53 is an escutcheon lever trim in keyed entry function. Match the trim to the device family you are installing.
6) What is the difference between the Von Duprin 880K-DT and a storeroom function exit trim?
The 880K-DT is a dummy knob: it is rigid trim for pulling the door, with egress handled by the 88 Series device inside. A storeroom trim keeps the outside locked but retracts the latch with a key, as on the Design Hardware KIL Storeroom trim with a Schlage C keyway and flat lever, the Marks USA M195F storeroom lever/rose trim, or the Pamex E9000 storeroom trim with an L3 lever for doors 1-3/8 inch to 2 inch thick. Choose dummy only where no exterior entry is needed.
7) Will a trim made for Sargent or Corbin Russwin exit devices fit my Von Duprin 88 Series device?
No. Exit trim is device-specific. The 880K-DT is made for Von Duprin 88 Series devices in rim, mortise and vertical rod preps. The Sargent 744 is built for 8700 and 8900 Series devices, the Corbin Russwin x810ET for ED4000 Series, and the Corbin Russwin VT957ET for ED5000 Series. Order trim against the device series already on the door.
8) Is the 880K-DT trim handed? I have both left and right hand doors in the building.
Non-handed, so one part number covers left and right hand openings. For a property manager or MRO buyer stocking spares that means a single line item on the shelf instead of two, and no handing call at the time of install.
9) How far does the Von Duprin 880 knob trim stick out from the door face?
Projection is 2 3/4 inches (70 mm) off the door. Worth checking on openings where a door swings back against a wall, a side-lite frame, or another leaf of a pair, and on tight vestibules where a projecting knob could foul an adjacent door.
10) Is this trim heavy enough for a high traffic entrance like a school or hospital?
It is a Grade 1, heavy duty trim made from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel. Grade 1 is the top commercial duty classification under the ANSI/BHMA grading scheme, which is what specifiers typically call for on education, healthcare, and government openings.
11) What if I want no knob at all on the outside, just a blank plate?
Von Duprin offers an 880EO exit only trim plate in the same 880 line for that case. To have it supplied with the device, specify 88EOx880EO. Other functions in the range are 880DT, 880K, 880NL, and 880TP, so you can move to a keyed nightlatch or a thumbpiece if the opening later needs outside access.
12) Will a Sargent 704ET or Falcon 510L work in place of the Von Duprin 880K-DT?
No. Those are keyed lever trims for other device families: the Sargent 704ET is a Grade 1 heavy duty night latch lever trim for Sargent 700 Series devices, and the Falcon 510L is a heavy duty classroom function lever trim for Falcon 24/25 Series. Both give outside key entry, which a dummy knob does not, and neither matches the 88 Series prep. Stay within the Von Duprin 880 line for an 88 Series device.
13) If I do not need any exterior trim hardware at all, what is simpler than the 880K-DT?
Where the outside face only needs a grip or a cover, an exit only pull trim is the simpler choice. The BEST 1700 Series 1701 is an exit only pull trim for wide stile applications, and the BEST 4900 Series is an exit only lever trim, also wide stile, both for 2000 Series exit devices. The 880K-DT differs in that it is a knob trim matched to Von Duprin 88 Series devices in rim, mortise and vertical rod preps.
14) Is a passage function exit trim the same thing as the 880K-DT dummy knob?
They are not the same. A passage trim, such as the Arrow SRX01 Sierra lever trim with rose for ED910, S1150 and S1250 devices, the Corbin Russwin 3310AET for ED300 Series, or the Corbin Russwin x910ET for ED5200/ED5400/ED5800 Series, turns and retracts the latch from the outside. The 880K-DT knob is fixed and does not operate the latch at all.
15) We want a lever on the outside instead of a knob for ADA-style operation. What replaces the 880K-DT?
The 880K-DT is a knob-style trim. If a lever grip is required, peers include the Falcon 510L, a heavy duty classroom function trim with a lever handle for 24/25 Series devices, the Sargent 704-ETL nightlatch lever trim with key retract for PE Series devices, and the Dexter ED1500T Grade 1 trim with a regular lever. Function differs from the dummy 880K-DT in each case, so confirm whether the opening needs exterior latch operation.
16) Our spec calls for Grade 1 heavy duty exit trim. Besides the Von Duprin 880K-DT, what else meets that?
The 880K-DT carries a Grade 1, heavy duty rating. Other Grade 1 exit trims include the Sargent 704ET and 704-ETL, both heavy duty night latch lever trims, the Sargent 744 freewheeling trim for 8700 and 8900 Series surface vertical rod and mortise devices, the Design Hardware KIL Entry trim, and the Pamex E9000 storeroom trim. Falcon's 179L and 212L are medium duty by comparison.
17) What finishes does the 880K-DT dummy knob trim come in?
Eleven finishes across every prep: 605 Bright Brass, 606 Satin Brass, 612 Satin Bronze, 613 Oil Rubbed Bronze, 619 Satin Nickel, 622 Matte Black, 625 Bright Chrome, 626 Satin Chrome, 629/US32 Bright Stainless Steel, 643E Aged Bronze, and 693/SPBLK Black Painted. 626 Satin Chrome and 630-family stainless tones are the usual match for existing Von Duprin devices on commercial openings, so pull the finish code off the device you are trimming and match it.
18) Is the 880K-DT suitable for residential use?
It is classified for commercial use and built around the 88 Series wide style cross bar device, so the typical applications are offices, schools, healthcare, retail, warehouses, multi-tenant residential buildings, and municipal facilities. It is not a residential knob and needs an 88 Series exit device on the door to serve any purpose.
How fast can I get the Von Duprin 880K-DT-R 26D delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Von Duprin 880K-DT-R 26D come with a warranty?
Absolutely. The Von Duprin 880K-DT-R 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Von Duprin 880K-DT-R 26D?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Von Duprin 880K-DT-R 26D from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!