Corbin Russwin CK4350 Half Dum...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$422.57
$230.49
Corbin Russwin Corbin Russwin CK4350 Half Dummy Trim Cylindrical Lock - Grade 1, Global Knob, Non-Keyed COR-CK4350-NONKEYED

Corbin Russwin CK4350 Half Dummy Trim Cylindrical Lock - Grade 1, Global Knob, Non-Keyed

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Model: CK4350 GRD 605
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$422.57
$230.49
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Corbin Russwin CK4350-NONKEYED Half Dummy Trim Cylindrical Knobset - Grade 1, Non-Keyed, Global Knob, Steel-Lined for Impact Resistance

Commercial-Grade Half Dummy Trim for High-Use Institutional and Industrial Applications

The Corbin Russwin CK4350-NONKEYED is a Grade 1 half dummy trim cylindrical knobset from the CK4300 Series, engineered for demanding commercial, industrial, and institutional environments. The knob functions as a pull only with no locking or latching operation, and the knob is rigid throughout use. Designed to accommodate door thicknesses of 1-3/8" to 2" with a 2-3/4" backset, this non-keyed, non-handed unit installs easily across a wide range of door configurations. Internal parts are zinc dichromate plated for corrosion resistance, and the heavy wrought knob features a steel liner for superior impact resistance.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates doors ranging from 1-3/8" to 2" in thickness, providing versatile fit across standard commercial door applications.
  • Backset Specification: Standard 2-3/4" backset ensures compatibility with common door preparations in commercial and institutional settings.
  • Strike Dimensions: Includes an ANSI curved lip strike measuring 4-7/8" x 1-1/4" with a 1-1/4" lip to center for precise, code-compliant installation.
  • Heavy-Duty Construction: Heavy wrought knobs with a steel liner deliver exceptional impact resistance, making this knobset ideal for high-traffic, high-use environments.
  • Corrosion-Resistant Internal Components: Internal parts are zinc dichromate plated to resist corrosion and extend service life in demanding applications.
  • Stainless Steel Latchbolt: Features a 1/2" (13mm) stainless steel throw latchbolt for reliable, long-lasting performance.
  • Non-Handed Design: Non-handed configuration simplifies installation and reduces inventory requirements for facilities managers and contractors.
  • Dummy Trim Function: Knob acts as a pull only with no operation and remains rigid, suitable for inactive door leaves, closets, and decorative applications.
  • Manufacturer Warranty: Backed by a 3 Year Limited warranty for added confidence and protection.

Technical Specifications

  • Subcategory: Cylindrical Locks
  • Product Group: Mechanical Locks
  • Series: CK4300 Series
  • Grade: Grade 1
  • Keyed Function: Non-Keyed
  • Warranty: 3 Year Limited
  • Product Subgroup: Bored Locksets
  • Product Type: Knobsets
  • Keyed: No
  • Fasteners: Wood and Machine Screws
  • Commercial/Residential: Commercial
  • Function Description: Knob acts as pull only, no operation. Knob is rigid.
  • Lock Type: Cylindrical
  • Handle Type: Knob
  • Lock Function: Dummy
  • Product Attribute: Cylindrical Locks
  • Product Model: CK4350
  • Product Function: Dummy
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/8" to 2"
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Professional Applications

  • Schools and Educational Facilities
  • Hotels and Hospitality Properties
  • Apartments and Multi-Tenant Residential Properties
  • Hospitals and Nursing Homes
  • Churches and Houses of Worship
  • Municipal and Government Buildings
  • Airports and Transportation Hubs
  • Retail Complexes and Commercial Offices
  • Industrial and Warehouse Facilities

Why Choose Corbin Russwin Quality?

Corbin Russwin CK4300 Series cylindrical knobsets are built to Grade 1 standards with heavy wrought knobs featuring steel liners for impact resistance and zinc dichromate plated internal components for long-term corrosion resistance. The 1/2" (13mm) stainless steel throw latchbolt and robust construction make this series a trusted choice for the most demanding commercial, industrial, and institutional environments. Backed by a 3 Year Limited warranty, Corbin Russwin delivers professional-grade reliability where dependable performance is essential.

Product Specs

Subcategory:
Cylindrical Locks
Product Group:
Mechanical Locks
Series:
CK4300 Series
Grade:
Grade 1
Keyed Function:
Non-Keyed
Warranty:
3 Year Limited
Product Subgroup:
Bored Locksets
Product Type:
Knobsets
Keyed:
No
Fasteners:
Wood and Machine Screws
Commercial/Residential:
Commercial
Function Description:
Knob acts as pull only, no operation. Knob is rigid.
Lock Type:
Cylindrical
Handle Type:
Knob
Lock Function:
Dummy
Product Attribute:
Cylindrical Locks
Product Model:
CK4350
Product Function:
Dummy
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 2"
Product Category:
Mechanical Locks
Department:
Door Hardware

Corbin Russwin CK4350 GRD 605 – Frequently Asked Questions

1) Does the Corbin Russwin CK4350 half dummy actually latch, or is it just a pull?
Pull only. The CK4350 is a half dummy trim, which means the knob is rigid and does not turn, and there is no latch and no locking operation at all. It mounts a single knob to one face of the door. Use it on an inactive leaf of a pair, a closet or cabinet door that is held by a catch or a ball catch, or anywhere you want matching hardware appearance without a working lock. If you need the door to stay shut on a latch, you need a passage function instead.
2) What door thickness will the CK4350 dummy knob mount on?
It covers 1-3/8 inch through 2 inch doors, so standard 1-3/4 inch commercial leaves are well inside the range, and so are older 1-3/8 inch interior doors and thicker 2 inch leaves. That upper end matters: a lot of dummy trims stop at 1-3/4 or 1-7/8 inches. The Schlage A170 single dummy, for example, is listed at 1-3/8 to 1-7/8 inches, so on a full 2 inch door the Corbin Russwin is the one that fits.
3) Will the CK4350 dummy drop into the existing 2-3/4 inch backset prep on my doors?
Yes, it is built to the 2-3/4 inch backset used on most commercial door prep, so it lines up with an existing cylindrical bore on a door that previously carried a standard heavy duty knob lock. Because it is a dummy, nothing goes into the latch bore, and no strike is needed in the frame.
4) I need a knob on both sides of an inactive door. Is the CK4350 what I want?
No. Half dummy trim means one knob, one face. For knobs on both faces you need a full or double dummy, or two halves. Some brands sell the pair outright, like the Emtek Arts and Crafts hammered egg dummy and the Emtek Georgetown crystal dummy, both supplied as pairs, though those are decorative brass rather than Grade 1 commercial trim.
5) What should I use if the door needs to lock or be keyed rather than just take a pull?
The CK4350 is non-keyed with no locking function at all. For a keyed commercial knob at the same Grade 1 level, the Sargent 8XG04 is a heavy duty storeroom/closet single cylinder knob lock with a 2-3/4 inch backset, and the BEST 8K Series is a Grade 1 heavy duty entrance function single cylinder knob lock. For a bed or bath opening that only needs interior privacy, the Dexter C2000 privacy knob is a Grade 2 non-keyed option for 1-3/8 inch to 1-3/4 inch doors.
6) I need the door to actually latch closed - what do I order instead of the CK4350?
The CK4350 knob is rigid and performs no operation, so it will not latch anything. For a latching non-keyed opening, the Schlage D10S is a Grade 1 heavy duty cylindrical passage knob lock in the D Series, and the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset covering doors 1-3/8 inch to 2-1/4 inch. Either keeps you at the same grade as the CK4350 while adding a working latch.
7) What is the closest equivalent to the Corbin Russwin CK4350 half dummy knob from another manufacturer?
The Schlage A170 single dummy trim is the nearest direct counterpart: it is also a non-keyed cylindrical dummy knob trim, in the A Series, rated Grade 2 and covering doors 1-3/8 inch to 1-7/8 inch. The CK4350 is Grade 1 and covers 1-3/8 inch to 2 inch doors, so it reaches slightly thicker doors and sits a grade above. Both give a fixed knob that serves as a pull only.
8) Do I need to worry about handing when I order this knob?
No. The CK4350 is non-handed, so one part number works on left hand and right hand openings alike. For a property manager stocking spares that means one item covers every door in the building rather than two.
9) Is a Grade 1 dummy knob worth it, or is Grade 2 enough for a closet door?
The CK4350 is Grade 1, with a heavy wrought knob over a steel liner and zinc dichromate plated internal parts. On a dummy the grade shows up as impact and abuse resistance rather than cycle life, since nothing operates. For a school corridor, a dorm, or a hospital wing where the knob takes carts and kicks, Grade 1 earns its place. On a light duty interior closet, the BEST 6K Series single dummy is a Grade 2, medium duty alternative in the same cylindrical knob format.
10) What finishes does the CK4350 dummy knob come in, and will it match the rest of my hardware?
Three finishes: 605 bright brass, 613 oil-rubbed satin bronze, and 630 satin stainless steel. 630 is the usual match for commercial openings running stainless or satin chrome trim, 605 for polished brass suites, and 613 for darker bronze schemes. Pick by the BHMA number on the locks already hanging rather than by the name.
11) Does the CK4350 knob match the other CK4300 Series locks on my doors?
Yes, it uses the same Global knob design as the rest of the CK4300 Series cylindrical locksets, so a dummy on an inactive leaf reads identically to the working passage or storeroom knobs beside it. Match the finish number and the opening looks consistent across the pair.
12) Is there a lighter-duty dummy knob if Grade 1 is more than the opening needs?
Yes. The BEST 6K Series single dummy trim is a Grade 2, medium duty non-keyed cylindrical dummy knob, and the Bravura Biloxi with round trim is a Grade 2 dummy knobset. Both perform the same fixed-knob-as-pull role as the Corbin Russwin CK4350, which is built to Grade 1 for commercial traffic.
13) Does a dummy knob pair give me the same thing as the Corbin Russwin CK4350?
Not quite. The CK4350 is a half dummy, meaning trim on one face only. The Emtek Arts and Crafts hammered egg dummy and the Emtek Classic Brass Crystal Georgetown dummy are supplied as pairs, one knob for each face. Order a pair when both sides of an inactive leaf need a pull, and the half dummy when only one face is trimmed.
14) What is the difference between the Corbin Russwin CK4350 and the Cal-Royal BA40 dummy knob?
Both are cylindrical dummy knobs. The Cal-Royal BA40 is from the Barrington BA Series and fits doors 1-3/8 inch to 1-3/4 inch. The CK4350 is Grade 1 and fits 1-3/8 inch to 2 inch, so it covers thicker leaves. Check your door thickness first - on a 2 inch door the BA40 is out of range.
15) Will a passage knobset work in place of a half dummy on a closet door?
It changes how the door behaves. The CK4350 knob is rigid and does not retract anything, so the door needs a catch or stop to hold it. A passage set such as the Arrow MK01, a Grade 2 non-keyed passage knob for 1-3/8 inch to 1-3/4 inch doors, or the Falcon W101, a Grade 2 fire rated passage/closet knob lock with a 2-3/4 inch backset, gives you a turning knob and a latch that holds the door shut.
16) Does the CK4350 come with mounting screws, or do I need to buy hardware separately?
Wood and machine screws are included, so it covers both wood doors and metal doors without a separate fastener pack. Corbin Russwin also publishes dummy trim knob installation instructions for the set.
17) Are there single dummy knobs with a more decorative look than the CK4350?
Yes. The Omnia 434/0 is a traditional egg-shaped single dummy lockset in solid brass, the Omnia 442/00 is a traditional single dummy knob latchset with a 2-5/8 inch rose in solid brass, and the Omnia 458/0 is a traditional single dummy knob latchset in solid brass. The Corbin Russwin CK4350 takes the opposite approach with a heavy wrought steel-lined knob built to Grade 1 for commercial traffic, and comes in 605 bright brass, 613 satin bronze oil-rubbed and 630 satin stainless steel.
How fast can I get the Corbin Russwin CK4350 GRD 605 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 Corbin Russwin CK4350 GRD 605 come with a warranty?
Absolutely. The Corbin Russwin CK4350 GRD 605 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 Corbin Russwin CK4350 GRD 605?
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 Corbin Russwin CK4350 GRD 605 from ZenSupply?
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