Corbin Russwin CK4480 Communic...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$233.91
$195.53
Corbin Russwin Corbin Russwin CK4480 Communicating/Exit Cylindrical Lock - Grade 2, Global Knob, Non-Keyed COR-CK4480-NONKEYED

Corbin Russwin CK4480 Communicating/Exit Cylindrical Lock - Grade 2, Global Knob, Non-Keyed

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Model: CK4480 GWC 630
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$233.91
$195.53
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Corbin Russwin CK4480-NONKEYED Communicating/Exit Cylindrical Knobset - Grade 2, Non-Keyed, 1-3/8" to 1-3/4" Doors

Commercial-Grade Communicating/Exit Cylindrical Lock with Deadlocking Latchbolt

The Corbin Russwin CK4480-NONKEYED is a Grade 2 communicating/exit cylindrical knobset from the CK4400 Series, engineered for quality residential and light commercial applications including apartments, motels, and offices. This non-keyed lock features a deadlocking latchbolt operated by knob from the outside only, with a blank rose on the inside providing no inside operation. Designed for doors ranging from 1-3/8" to 1-3/4" in thickness with a 2-3/4" backset, it delivers an outstanding combination of value and performance in a non-handed configuration that simplifies installation.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates doors from 1-3/8" to 1-3/4" thick, making it suitable for a wide range of standard commercial and residential door constructions.
  • Communicating/Exit Function: Deadlocking latchbolt operated by knob from the outside only; blank rose inside with no inside operation, ideal for communicating and exit door applications.
  • Precision-Manufactured Mechanism: Zinc dichromated internal components provide corrosion resistance for long-term reliability in demanding environments.
  • Stainless Steel Latchbolt: Stainless steel latchbolt construction ensures extended service life and consistent latching performance over time.
  • Adjustable Latchbolt: Accommodates both flat and beveled doors for versatile installation across varied door preparations.
  • Standard Latch & Strike Included: Comes with a 574F55 latch featuring a 2-3/4" backset, square corner front measuring 2-1/4" x 1-1/8", and an ANSI curved lip strike at 4-7/8" x 1-1/4" x 1-1/4" lip to center.
  • Non-Handed Design: Non-handed configuration eliminates handing concerns during ordering and installation, reducing errors and simplifying inventory management.
  • Stainless Steel Trim Available: Optional stainless steel trim provides additional finish durability for high-use environments.
  • Manufacturer Warranty: Backed by a 3 Year Limited warranty for added confidence and protection.

Technical Specifications

  • Subcategory: Cylindrical Locks
  • Product Group: Mechanical Locks
  • Series: CK4400 Series
  • Grade: Grade 2
  • Keyed Function: Non-Keyed
  • Standard Latch: 574F55 - 2-3/4" Backset, Square corner front, 2-1/4" x 1-1/8"
  • Standard Strike: ANSI Curved Lip 4-7/8" x 1-1/4" x 1-1/4" lip to center
  • Warranty: 3 Year Limited
  • ANSI/BHMA: F111
  • Product Subgroup: Bored Locksets
  • Product Type: Knobsets
  • Keyed: No
  • Fasteners: Wood and Machine Screws
  • Commercial/Residential: Commercial
  • Function Description: Deadlocking latchbolt by knob outside only. Blank rose inside, no inside operation.
  • Lock Type: Cylindrical
  • Handle Type: Knob
  • Lock Function: Communicating/Exit
  • Product Attribute: Cylindrical Locks
  • Product Model: CK4480
  • Product Function: Communicating/Exit
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/8" to 1-3/4"
  • Product Category: Mechanical Locks
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Apartment and Multi-Unit Residential Properties
  • Motel and Hospitality Facilities
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Light Commercial Buildings

Why Choose Corbin Russwin Quality?

Corbin Russwin CK4400 Series cylindrical locks deliver professional-grade reliability through precision-manufactured mechanisms with zinc dichromate corrosion resistance and stainless steel latchbolt construction for long service life. The CK4480-NONKEYED meets ANSI/BHMA F111 standards and is backed by a 3 Year Limited warranty, providing confidence for commercial and quality residential installations. Engineered for demanding applications where consistent communicating/exit function and dependable performance are essential.

Manufacturer Resources

Corbin Russwin Condensed Catalog

Product Specs

Subcategory:
Cylindrical Locks
Product Group:
Mechanical Locks
Series:
CK4400 Series
Grade:
Grade 2
Keyed Function:
Non-Keyed
Standard Latch:
574F55 - 2-3/4" Backset, Square corner front, 2-1/4" x 1-1/8"
Standard Strike:
ANSI Curved Lip 4-7/8" x 1-1/4" x 1-1/4" lip to center
Warranty:
3 Year Limited
ANSI/BHMA:
F111
Product Subgroup:
Bored Locksets
Product Type:
Knobsets
Keyed:
No
Fasteners:
Wood and Machine Screws
Commercial/Residential:
Commercial
Function Description:
Deadlocking latchbolt by knob outside only. Blank rose inside, no inside operation.
Lock Type:
Cylindrical
Handle Type:
Knob
Lock Function:
Communicating/Exit
Product Attribute:
Cylindrical Locks
Product Model:
CK4480
Product Function:
Communicating/Exit
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 1-3/4"
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Corbin Russwin CK4480 GWC 630 – Frequently Asked Questions

1) What does the Corbin Russwin CK4480 communicating/exit function actually do on a door?
The CK4480 is a one-sided knob lock. A knob on the outside retracts a deadlocking latchbolt; the inside gets a blank rose with no operation at all. So the door can be opened from the outside face only, and from the inside it is a push-open or pull-open leaf with no trim to turn. That is what makes it a communicating or exit application: the room side is meant to be exited another way, or the opening is a pair where only one face needs operation. If you need someone to be able to operate the door from both faces, this is the wrong lock and you want a passage function instead, such as the Dexter C2000 Series passage knob.
2) Will the CK4480 knobset fit a 1-3/8 inch door, or is it 1-3/4 only?
Both. The CK4480 covers 1-3/8 inch through 1-3/4 inch door thickness, so it goes on an older interior wood leaf as readily as on a standard 1-3/4 inch commercial door. It needs a 2-3/4 inch backset prep. If your existing bore is on a 2-3/8 inch backset, this lock will not line up without moving the prep.
3) What ANSI/BHMA grade and function code is the Corbin Russwin CK4480?
Grade 2, ANSI/BHMA function F111. For a facility spec that calls out F111 communicating or exit by number, this lock answers it directly. Grade 2 is the tier for apartments, motels, offices and light commercial traffic. If your standard is Grade 1 across the building, look at a heavy duty cylindrical line instead, such as the BEST 8K Series or the Falcon X Series.
4) Does the CK4480 take a key, and can it be keyed into my master system?
No key, no cylinder. The CK4480 is a non-keyed lock, so there is nothing to key and it cannot join a masterkey system. Security comes from the deadlocking latchbolt and from the fact that the inside face has no operating trim. If the opening needs to be locked and keyed, this model will not do it; a keyed cylindrical knob such as the Sargent 6G04 storeroom function is the direction to look.
5) What is the closest non-keyed Grade 2 cylindrical knob lock to the Corbin Russwin CK4480 if the door needs operation from both sides?
The CK4480 is a Grade 2 non-keyed cylindrical knobset whose latchbolt is retracted by the outside knob only, with a blank rose inside and no inside operation. If the opening needs a working knob on both faces, the Dexter C2000 Series passage knob lock is a Grade 2 passage/hall/closet function knob for doors 1-3/8 inch to 1-3/4 inch, the same door thickness range the CK4480 covers. The Arrow MK01 and Arrow RK01 are also Grade 2 non-keyed passage knobs for 1-3/8 inch to 1-3/4 inch doors, the MK01 in the MK Series and the RK01 with a ball knob in the RK Series.
6) What should I use instead of a CK4480 knobset on a fire-rated opening?
The CK4480 is a Grade 2 cylindrical knob lock meeting ANSI/BHMA F111. Where the opening carries a fire label, the Falcon W101 is a Grade 2 medium duty cylindrical knob lock in passage/hall/closet function with a 2-3/4 inch backset and a fire rating, matching the CK4480's 2-3/4 inch backset. The Falcon X101 is the heavier option, a Grade 1 heavy duty passage knobset with an interchangeable core, a fire rating, and a wider 1-3/8 inch to 2-1/4 inch door thickness range. Both Falcon locks operate from either side, unlike the CK4480, which has no inside operation.
7) The CK4480 has no key. What knob lock do I use if the door has to be locked and keyed?
The CK4480 is a non-keyed knobset. For a keyed opening, the Sargent 6G04 is a Grade 2 standard duty storeroom/closet knob lock with a single cylinder in the 6 Line Series, and the Sargent 8XG04 is the Grade 1 heavy duty storeroom/closet single cylinder version with a 2-3/4 inch backset, the same backset the CK4480 uses. For an entry/office pattern, the Dexter C2000 Series entry/office ball knob lock is Grade 2 and keyed for doors 1-3/8 inch to 1-3/4 inch, and the BEST 8K Series is a Grade 1 heavy duty single cylinder entrance knob lock.
8) What is the Grade 1 step up from the Corbin Russwin CK4480 for a high traffic non-keyed door?
The CK4480 is Grade 2. Where the traffic count calls for Grade 1 and the door still does not need a key, the Schlage D10S is a Grade 1 heavy duty cylindrical non-keyed passage latch with an Orbit knob in the D Series, and the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset with an interchangeable core for doors 1-3/8 inch to 2-1/4 inch. Both retract from either side, while the CK4480 has a blank rose inside.
9) My door is 2 inches thick. What knob lock works if the CK4480 does not?
The CK4480 accepts doors from 1-3/8 inch to 1-3/4 inch, so a 2 inch door is outside its range. The Deltana 6171 Round Knob entry and Deltana 3381 Egg Knob entry both cover 1-3/8 inch to 2 inch doors, and the Deltana 6112 St. Thomas Knob privacy covers the same range for a bed or bath door. The Lockey 3830 mechanical keyless combination knob lock with auto-locking passage function covers 1-3/16 inch to 2 inch.
10) Does a 2-3/8 inch backset knobset work where a Corbin Russwin CK4480 is specified?
No. The CK4480 is bored for a 2-3/4 inch backset and ships with a 574F55 latch cut to that backset. The Baldwin Estate 5000 Baltimore passage knob with 5048 rose and the Baldwin Estate 5000 Baltimore privacy knob with 5148 rose are both built on a 2-3/8 inch backset with a full lip strike, and the Omnia 458/0 single dummy knob latchset is a 2-3/8 inch backset part. Those suit a door bored at 2-3/8 inch; the CK4480 does not fit that prep.
11) Do I have to specify handing when I order a Corbin Russwin CK4480?
No handing to call out. The CK4480 is non-handed, so one part number covers left and right hand openings, and the latchbolt adjusts for flat or beveled doors. For a property manager stocking spares across a building, that means one shelf item rather than a left and a right.
12) Is a dummy knob the same thing as the Corbin Russwin CK4480?
No. The CK4480 has a working deadlocking latchbolt retracted by the outside knob, so the door latches and can be opened from the outside face. A dummy trim has no latch and no moving mechanism at all. The Schlage A170 is a Grade 2 heavy duty single dummy trim for doors 1-3/8 inch to 1-7/8 inch, and the BEST 6K Series 1DT is a Grade 2 medium duty single dummy knob. Either is a surface-applied pull, not a substitute for a latching lock.
13) What is a lighter-duty alternative to the Corbin Russwin CK4480 for apartment interior doors?
The CK4480 is a Grade 2 commercial cylindrical knobset. For interior apartment doors where a Grade 3 knob is acceptable, the Pamex FTF Baron passage lockset is Grade 3 for doors 1-3/8 inch to 1-3/4 inch, the same door thickness the CK4480 accepts, and the Pamex FTF privacy version covers bed and bath doors in the same range. Cal-Royal BER20 is a Grade 3 privacy knob with brass trim, also 1-3/8 inch to 1-3/4 inch. All three operate from both sides, where the CK4480 works from the outside only.
14) Is exit device knob trim an alternative to the CK4480 for an exit door?
They solve different openings. The CK4480 is a cylindrical lock that bores into the door and carries its own deadlocking latchbolt with a 2-3/4 inch backset. Exit device trim mounts to a panic device already on the door and has no latch of its own: the Sargent 28C-KNOB is knob and rose trim in classroom function from the 28 Series for 1-3/4 inch doors, the Sargent 78-2875 is an outside knob only with B design in the 7800 Series, and the Imperial USA ED-BKL580 is storeroom function knob trim for the ED-500 Series. Choose trim only if the door already has the matching exit device.
15) Can I use a residential knob like the Kwikset Polo in place of a Corbin Russwin CK4480?
Only where the opening does not call for a commercial lock. The CK4480 is rated commercial at Grade 2 with a 2-3/4 inch backset. The Kwikset 400P-CP Polo keyed entry knob is Grade 3 for doors 1-3/8 inch to 1-3/4 inch with a round corner adjustable latch and round corner strike, and the Kwikset 200P Polo is a passage knob supplied with a 6AL latch and RCS round corner strike. The CK4480 ships with a 574F55 latch and an ANSI curved lip strike measuring 4-7/8 inch by 1-1/4 inch, so the strike prep in the frame differs between them.
16) I need to standardize apartment interior doors on one Grade 2 knob family alongside the CK4480. What functions are available?
The CK4480 covers the communicating and exit position as a Grade 2 non-handed knobset. The Dexter C2000 Series carries the rest of an interior door schedule at Grade 2 for the same 1-3/8 inch to 1-3/4 inch doors: passage for halls and closets, privacy for bed and bath, entry/office keyed, and classroom keyed. Callan Edgewood and Callan Roland are Grade 2 entrance knobsets if the entry door is being specified separately.
17) What finish does the Corbin Russwin CK4480 come in, and will it match the rest of my openings?
630 satin stainless steel is the finish, which is the common commercial stainless look and pairs with the 630 hinges, closers and exit hardware already on most institutional openings. If your building is standardized on a brass or bronze finish, this one will read noticeably lighter and cooler beside it.
18) What fasteners come with the CK4480, and will it mount to a hollow metal door?
Wood and machine screws are supplied, so the lock covers both a wood leaf and a metal door prepped with tapped holes, without a separate fastener pack. The internal parts are zinc dichromated and the latchbolt is stainless steel, which is why this holds up in corridor and exterior-adjacent openings where humidity is a factor.
19) Will a decorative brass or crystal knobset do the same job as a Corbin Russwin CK4480?
They are different classes of hardware. The CK4480 is a commercial Grade 2 cylindrical lock with a stainless steel deadlocking latchbolt, offered in 630 satin stainless steel. The Emtek Classic Brass Crystal Georgetown and Providence knobsets and the Emtek Arts and Crafts Hammered Egg knobset are dummy pairs with no latch, and the Emtek Porcelain knobs mount on a threaded rod. The Omnia 434/PA egg-shaped knob latchset is a passage latchset in solid brass with a 3 inch projection. Those are decorative interior sets, not commercial lock replacements.
How fast can I get the Corbin Russwin CK4480 GWC 630 delivered?
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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 CK4480 GWC 630 come with a warranty?
Absolutely. The Corbin Russwin CK4480 GWC 630 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 CK4480 GWC 630?
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