Von Duprin 880K Knob Function ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$507.00
$356.56
Von Duprin 880K Knob Function, Trim for 88 Series Exit Devices

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

(No reviews yet) Write a Review

Model: 880K-R 26D
Selected Finish is

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

$507.00
$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 Knob Function Exit Device Trim for 88 Series, Heavy Duty Grade 1, Non-Handed

Commercial-Grade Knob Trim for 88 Series Wide Style Exit Devices

The Von Duprin 880K is a heavy-duty, Grade 1 knob function exit device trim designed exclusively for the Von Duprin 88 Series wide style cross bar exit devices. Constructed from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel, this non-handed trim delivers exceptional durability and flexibility for commercial door applications. Compatible with Rim, Surface Mounted Vertical Rod, Concealed Vertical Rod, and Mortise configurations, the 880K supports both panic and fire rated applications across the full 88 Series product line. A product projection of 2 3/4" (70 mm) ensures consistent, ergonomic operation in high-traffic environments.

Professional Features & Benefits

  • Heavy-Duty Construction: Fabricated from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel for long-lasting performance in demanding commercial environments.
  • Grade 1 Duty Level: Rated Grade 1 Heavy Duty, meeting the highest standards for commercial door hardware reliability and longevity.
  • Non-Handed Design: Universal non-handed configuration simplifies specification, ordering, and installation without the need to determine door handing.
  • Broad Configuration Compatibility: Designed for use with 88 Series Rim, Surface Mounted Vertical Rod, Concealed Vertical Rod, and Mortise exit device configurations for maximum versatility.
  • Panic and Fire Rated Applications: Suitable for both panic and fire rated door applications, supporting code-compliant installations across a wide range of building types.
  • Flexible Trim Family: Part of the 880 Series trim line, which includes 880DT, 880K, 880NL, and 880TP functions, plus the optional 880EO exit only trim plate (order with exit device as 88EOx880EO).
  • Precise Centerline Dimensions: Rim centerline: A 39 13/16" (1011 mm) / B 36 13/16" (935 mm); Mortise Lock centerline: A 39 13/16" (1011 mm) / B 38 9/16" (979 mm); Surface Mounted Vertical Rod centerline: A 39 13/16" (1011 mm) / B 38 5/16" (973 mm).
  • Consistent Product Projection: 2 3/4" (70 mm) projection provides ergonomic knob placement for smooth, reliable egress operation.

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
  • Product Function: 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 are engineered to the highest commercial standards, with the 880K constructed from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel and rated Grade 1 Heavy Duty for dependable performance in the most demanding applications. The non-handed, flexible design of the 88 Series trim family ensures straightforward specification and installation across Rim, Mortise, and Vertical Rod configurations. Engineered for commercial environments where code compliance, durability, and reliable egress are essential.

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
Product Function:
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-R 26D – Frequently Asked Questions

1) Will the Von Duprin 880K knob trim work on my 88 Series exit device, or do I need a different trim for a rim versus a mortise device?
The 880K fits the 88 Series across all four device configurations: rim, surface mounted vertical rod, concealed vertical rod, and mortise. What changes is the prep, so you order it by device type. The three orderable preps are Rim Prep, Mortise Prep, and Vertical Rod Prep. Mounting centerlines differ by device: rim is A 39 13/16 in. (1011 mm) / B 36 13/16 in. (935 mm), mortise lock is A 39 13/16 in. (1011 mm) / B 38 9/16 in. (979 mm), and surface vertical rod is A 39 13/16 in. (1011 mm) / B 38 5/16 in. (973 mm). Pick the prep that matches the device already on the door. It is trim for 88 Series devices only, not a universal exit trim.
2) Do I have to specify handing when I order Von Duprin 880K exit trim?
No handing to determine. The 880K is non-handed, so one part covers a left-hand and a right-hand opening. For a property manager stocking spares across a building, that means a single trim number and finish covers every 88 Series door of the same prep, instead of carrying both hands. The two things you do specify are the device prep (rim, mortise, or vertical rod) and the finish.
3) I have a Von Duprin 88 Series device but the exterior trim is broken. Can I replace just the trim?
Yes, that is exactly what the 880K is for. It is exterior trim built for 88 Series wide style cross bar devices, so the device stays on the door and only the outside trim changes. Match the prep to the device you have (rim, mortise, or vertical rod) since the mounting centerlines differ between them, and match the finish to the rest of the opening. It is not a device and it will not fit non-88 Series exit hardware.
4) My exit device is not a Von Duprin 88. What trim should I be looking at instead?
Exit trim is series specific, so the 880K is off the table for any device that is not an 88 Series. Go by the device brand and series you already have: Sargent 700 Series devices take the Sargent 704ET nightlatch lever trim, and Sargent 8700/8900 surface vertical rod and mortise devices take the 70 Series 744. Corbin Russwin ED4000 devices take the x810ET passage trim, and ED5200S/ED5200/ED5400/ED5800 devices take the x910ET. BEST Precision 2000 Series devices take the 2901 narrow stile or 4901 wide stile exit only lever trim. Falcon 24/25 Series devices take the 510L classroom trim. Read the series off the device before you order trim.
5) How do I know which centerline dimension to use when laying out the 880K on the door?
Use the centerline pair that matches the device, not the door. For a rim device it is A 39 13/16 in. (1011 mm) and B 36 13/16 in. (935 mm). For a mortise lock device, A stays 39 13/16 in. (1011 mm) and B goes to 38 9/16 in. (979 mm). For a surface mounted vertical rod device, A 39 13/16 in. (1011 mm) and B 38 5/16 in. (973 mm). The A dimension is common to all three, so if you are laying out a mixed run of 88 Series openings the top line is the same and only the B line moves. Ordering the wrong prep means the trim holes will not line up with the device.
6) Which exit trims can I use on a fire rated door if the 880K does not fit my device?
The Von Duprin 880K supports both panic and fire rated applications across the 88 Series line. Be careful with some of the alternates: the Accentra 121NL nightlatch trim, the 426F Augusta lever escutcheon trim for the 6000 and 1800 Series, the AU-441F keyed lever night latch trim and the 446F Grade 1 classroom trim are each listed with a fire rating of No. On a fire rated opening those are not the substitution to make.
7) The opening needs to be locked from the outside and opened with a key - is the 880K the right trim?
The 880K is a knob function trim for 88 Series devices. If the outside has to stay secure and open by key, a night latch or storeroom function trim is the one to specify. The Sargent 744 is a Grade 1 night latch trim where the key retracts the latch, for surface vertical rod and mortise 8700 and 8900 Series devices. The Corbin Russwin VT957ET is a nightlatch escutcheon trim in stamped or formed stainless steel for the ED5000 Series. The Design Hardware KIL storeroom trim is Grade 1 storeroom function for 1000 and 2000 Series devices with a Schlage C keyway. Pick by the exit device family already on the door.
8) What is the difference between the Von Duprin 880K knob trim and a lever trim like the Falcon 510L?
The 880K is a knob function trim built for Von Duprin 88 Series exit devices, Grade 1 heavy duty, non-handed, with a 2 3/4 inch (70 mm) projection. The Falcon 510L is a classroom function trim with a lever handle, also heavy duty, built for the Falcon 24/25 Series. The two differences that decide the order are the operating handle - knob versus lever - and the device family each one mounts to. If the door already carries an 88 Series cross bar device, the 510L will not mount to it, and if the door carries a Falcon 24 or 25 Series device the 880K will not mount to it.
9) How far does the Von Duprin 880K knob stick out from the door face?
Projection is 2 3/4 in. (70 mm) from the door. That matters in a corridor or a vestibule where the door swings toward a wall, a return, or an adjacent leaf, and it is the number to check against a stop or a side-lite frame before you commit. It is also consistent across all three device preps, so a run of 88 Series doors trimmed with 880K reads the same on the pull side.
10) Should I put knob trim or lever trim on an exit device?
Knob trim like the Von Duprin 880K is a round grip you turn; lever trim is a bar you push down. Levers are what most commercial specs call for now on the accessible egress side because they operate without grasping or twisting, and knob trim is typically kept for openings where it matches existing hardware or is not on an accessible route. If you need a lever on an 88 Series device you are looking at a different trim function, not this one. Where the opening truly needs no outside operation at all, the 88 Series also offers the 880EO exit only trim plate, ordered with the device as 88EOx880EO.
11) What other functions are available in the Von Duprin 880 trim line besides the knob?
The 880 trim family runs 880DT, 880K, 880NL, and 880TP, plus the optional 880EO exit only trim plate which is ordered with the device as 88EOx880EO. The 880K is the knob function. If the opening needs a key to retract the latch from outside you are on the 880NL nightlatch rather than the knob; if it needs a thumbpiece, that is the 880TP. Decide the function first, then the device prep and finish.
12) Is there an electrified version of the 880K, or can I get access control on an 88 Series device?
The 880K is mechanical knob trim with no electrified option. For electrified exterior trim, Command Access builds the 230L for V96/36/23 Series Von Duprin devices with 12V/24V operation and fail safe or fail secure selection, and offers the ET15, ET25, and ET26 electrified trims for other device lines, with the ET26 in Grade 1 field reversible construction. Dormakaba's PowerPlex P201U is a self-powered trim for rim, mortise, and SVR devices, and the E-Plex 201U is a pushbutton electronic exit trim for wide stile openings. Check the device series against the trim before ordering, since electrified trim is as series specific as mechanical.
13) Is the Von Duprin 880K heavy enough for a school or hospital entrance that gets hit all day?
Grade 1, heavy duty, and built commercial. The trim is fabricated from heavy 10 gauge (2.4 mm) brass, bronze, or stainless steel, which is the construction level specified for high traffic openings in schools, healthcare, government buildings, and multi-tenant residential. Among the trims we carry, that Grade 1 heavy duty combination is shared by the Sargent 704ET and 744, the Pamex E9000, and the Falcon 510L; several other exit trims are medium duty, including the Falcon 179L and 212L.
14) Is there a simpler trim than the 880K for a door that only needs to be pulled from the outside, with no key entry?
Yes. The 880K is a knob function trim, so it carries an operating knob. If the outside only needs a pull, the BEST 1700 Series 1701 is an exit only pull trim for wide stile 2000 Series exit devices, and the Dexter ED1500T-DUMM-PULL is a Grade 1 dummy function trim with a handle pull plate for the ED1500 Series. The Detex 02BN is a dummy S-lever trim with a blank escutcheon for the Value Series devices. All three give a fixed grip with no latch retraction, and each is tied to its own device family.
15) The 880K is Grade 1 heavy duty - which other exit device trims carry the same rating?
The Von Duprin 880K is rated Grade 1 heavy duty. Peers at the same Grade 1 heavy duty rating include the Sargent 704ET night latch lever trim for the 700 Series and the Sargent 704-ETL night latch lever trim for the PE Series. The Falcon 510L is heavy duty classroom function for the 24/25 Series. Trims listed Grade 1 include the Sargent 744, the Pamex E9000 storeroom, the Dexter ED1500T with regular lever, and the Design Hardware LE08 entry function trim. By contrast the Falcon 179L and Falcon 212L are medium duty, which matters if you are standardizing a high-traffic facility on one duty level.
16) How does the 880K compare to a passage function trim like the Corbin Russwin 3310AET?
The 880K is a knob function trim for 88 Series devices, Grade 1 and non-handed. The Corbin Russwin 3310AET is a passage function trim for the ED300 Series covering rim, surface vertical rod and mortise devices, and the Corbin Russwin x810ET is passage function for the ED4000 Series. Passage trim always releases the latch from the outside with no locking, so the security behavior on the outside face is what separates the choice, along with the device family each trim mounts to.
17) The 880K is non-handed - which comparable trims also avoid a handing decision?
The Von Duprin 880K is non-handed, so one part number covers left and right hand openings. Among peers, the Command Access ET26 is field reversible with Grade 1 construction and the Sargent 704ET offers field reversible operation, both of which let one trim serve either hand once it is set at install. For a fleet buyer stocking spares across many doors, that is the property that keeps the shelf count down.
18) What finishes does the Von Duprin 880K knob trim come in so I can match the rest of my door hardware?
Eleven finishes, and each one is offered in all three device preps: 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 is the usual commercial default and the one most existing Von Duprin openings will already be wearing. Because the trim is non-handed, one finish choice covers both hands of a pair.
19) Is a thumbpiece trim an alternative to the 880K knob trim?
It is a different operating style, not a drop-in. The 880K uses a knob with a 2 3/4 inch (70 mm) projection. The Dexter ED1000T-CLRM-TP-NC is a Grade 1 classroom function trim built as thumbpiece by pull plate by cylinder, supplied less cylinder, for the ED1000 Series, and the Tell EDTHP53 is a thumbpiece trim in entry function for doors 1-3/8 inch to 1-3/4 inch thick. A thumbpiece is gripped by the pull and depressed by the thumb rather than turned, and each of those is tied to its own device family.
20) What is the difference between the 880K and the Tell EDELT80 storeroom lever trim?
The 880K is a Grade 1 heavy duty knob trim for Von Duprin 88 Series devices, non-handed, with a 2 3/4 inch (70 mm) projection. The Tell EDELT80 is an escutcheon lever trim in storeroom function fitting doors 1-3/8 inch to 1-3/4 inch thick, and Tell also builds the EDELT53 escutcheon lever trim in keyed entry function over the same door thickness range. The choice comes down to knob versus escutcheon lever, the outside function you need, and matching the trim to the exit device the door already carries.
How fast can I get the Von Duprin 880K-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-R 26D come with a warranty?
Absolutely. The Von Duprin 880K-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-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-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.
!