Cal-Royal CGN03 Grade 1 Classr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$211.62
$158.27
Cal-Royal Cal-Royal CGN03 Heavy Duty Grade 1 Classroom Lock, Genesys Series CGN03

Cal-Royal CGN03 Grade 1 Classroom Lock, Genesys Series with Interchangeable Core Option

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Model: CGN03-26D
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$211.62
$158.27
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Cal-Royal CGN03 Grade 1 Classroom Lock, Genesys Series with Interchangeable Core Option

The Cal-Royal CGN03 is a Grade 1 Classroom Lock built to ANSI F84, featuring a deadlocking latchbolt operated by lever form on either side except when the outside lever is locked from outside by key. This heavy-duty cylindrical leverset is designed for 1-3/8" to 1-3/4" door thickness, uses a 2-3/4" backset, and meets or exceeds BHMA/ANSI A156.2 Series 4000, Grade 1 requirements. Built with cold rolled steel and zinc dichromate housing for rust resistance, the CGN03 is engineered for demanding institutional and commercial applications.

Key Features

  • Door Thickness Range: Accommodates 1-3/8" to 1-3/4" door thickness, with 2" to 2-1/4" thickness available on request.
  • Backset: Standard 2-3/4" backset with 2-1/4" x 1-1/8" latch faceplate; optional 2-1/4" x 1" faceplate for 2-3/8" backset.
  • Latch Throw: 1/2" throw brass latch, with 2-3/8", 3-3/4", and 5" backset options available; GND750 reversible deadlatch for flat and beveled doors.
  • Door Strike: 4-7/8" x 1-1/4" ASA/ANSI strike with curved lip to meet ANSI A115.2 door frame preparation.
  • Heavy-Duty Construction: Cold rolled steel housing with zinc dichromate finish for rust resistance and precision cast steel retractor with 2-1/8" diameter bore.
  • Clutch Mechanism: Free-turning handle in the lock position without retracting the latch, deterring handle breakage, with thru-bolted assembly and separate spring cage for each lever.
  • Cylinder & Keyways: 6-pin solid brass Schlage C keyway standard; also accepts Medeco, Assa, Kaba, and Cal-Royal (HSK) High Security Cylinders.
  • Interchangeable Core Option: Accepts compatible 6 or 7 pin cores with BEST, FALCON, and ARROW, and is also available with SCHLAGE, CORBIN/RUSSWIN, SARGENT, and YALE large format cylinders.

Certifications & Compliance

  • Meets or exceeds BHMA/ANSI A156.2 Series 4000, Grade 1 requirements
  • UL/cUL listed up to 3 Hours
  • Fire Rated

Technical Specifications

  • Product Group: Mechanical Locks
  • Keyed Function: Single Cylinder
  • Latch Throw: 1/2"
  • Product Subgroup: Bored Locksets
  • Product Type: Knobs and Levers
  • Subcategory: Cylindrical Locksets
  • Keyed: Yes
  • Cylinder and Keyways: Schlage C Keyway
  • UL Listing Type: UL/cUL listed up to 3 Hours
  • Product Attribute: Cylindrical Locks
  • Door Thickness Range: 1-3/8" to 1-3/4"
  • Fire Rating: Yes
  • Door Strike: 4-7/8 x 1-1/4 ASA/ANSI Strike with curved lip to meet ANSI A115.2 door frame preparation
  • Product Category: Mechanical Locks
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Multi-Tenant Residential Properties
  • Hotel and Motel Properties
  • Government and Municipal Buildings
  • Public Buildings

Why Cal-Royal CGN03?

Cal-Royal CGN03 classroom locks deliver professional-grade reliability with cold rolled steel construction, a precision cast steel retractor, and Grade 1 performance that meets or exceeds BHMA/ANSI A156.2 Series 4000 standards. The interchangeable core compatibility across major cylinder brands, combined with UL/cUL fire-rated listing up to 3 hours, makes this lockset engineered for demanding commercial and institutional applications where dependable, code-compliant performance is essential.

Product Specs

Product Group:
Mechanical Locks
Grade:
Grade 1
Keyed Function:
Single Cylinder
Latch Throw:
1/2"
Product Subgroup:
Bored Locksets
Product Type:
Knobs and Levers
Subcategory:
Cylindrical Locksets
Keyed:
Yes
Duty Level:
Heavy Duty
Commercial/Residential:
Commercial
Cylinder and Keyways:
Schlage C Keyway
UL Listing Type:
UL/cUL listed up to 3 Hours
Lock Function:
Classroom
Product Attribute:
Cylindrical Locks
Product Model:
CGN03
Product Function:
Classroom
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 1-3/4"
Fire Rating:
Yes
Door Strike:
4-7/8 x 1-1/4 ASA/ANSI Strike with curved lip to meet ANSI A115.2 door frame preparation"""
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Cal-Royal CGN03-26D – Frequently Asked Questions

1) Will the Cal-Royal CGN03 classroom lock fit a 1-3/8 inch door?
Yes. The CGN03 Genesys classroom leverset covers 1-3/8 inch through 1-3/4 inch doors as standard, which spans both the older interior door and the standard commercial 1-3/4 inch leaf. For thicker doors, 2 inch to 2-1/4 inch is available on request rather than off the shelf.
2) What backset do I have to specify when ordering the Cal-Royal CGN03?
Backset is a required choice on the CGN03: 2-3/4 inch or 2-3/8 inch. The 2-3/4 inch is the catalog standard and ships with a 2-1/4 x 1-1/8 inch latch faceplate; the 2-3/8 inch option uses a 2-1/4 x 1 inch faceplate. Measure from the door edge to the center of the bore before you pick, because these are the two usual commercial backsets and the wrong one will not line up with an existing prep.
3) Will the Cal-Royal CGN03 latch into the strike that is already in my frame?
If the frame is prepped to ANSI A115.2 it will. The CGN03 comes with a 4-7/8 x 1-1/4 inch ASA/ANSI strike with a curved lip, which is the standard commercial hollow metal frame prep. The latch is a 1/2 inch throw brass deadlatch, so an existing strike with a shallower or offset pocket than the ASA prep needs to be replaced with the supplied one.
4) Does the Cal-Royal CGN03 classroom lock need to be handed?
No handing to specify. The CGN03 is non-handed, and the GND750 deadlatch is reversible for flat and beveled doors, so one part number covers left and right hand openings. That matters if you are stocking spares for a building: one lock on the shelf fits any door.
5) How does a classroom function lock actually work, and is it the right function for a school door?
Classroom function means the outside lever is locked and unlocked only by key from the outside. The inside lever always retracts the latch, so the room is never locked in from the inside. Teachers cannot leave the door in a locked state by accident, but they do need the key in hand at the door to secure it. If you want a door that locks from a pushbutton or turn inside the room, an entrance or office function like the TownSteel CDC-109 or the Falcon K501 with its push-turnbutton is the function to look at instead.
6) Can I put the Cal-Royal CGN03 on a fire rated door?
Yes. The Genesys CGN03 is fire rated and UL/cUL listed up to 3 hours, which covers stairwell, corridor and cross-corridor openings in institutional work. It is also a Grade 1 lockset built to BHMA/ANSI A156.2 Series 4000 and ANSI F84 for classroom function, so it meets the heavy duty spec most school and healthcare drawings call for.
7) Will the Cal-Royal CGN03 key into my existing Schlage C master key system?
It will. The CGN03 ships with a 6-pin solid brass cylinder in the Schlage C keyway, so it pins into an existing C-keyway system without a cylinder swap. It also accepts Medeco, Assa, Kaba and Cal-Royal HSK high security cylinders if the building is on a restricted keyway.
8) Can the Cal-Royal CGN03 take a Best or Falcon interchangeable core?
Yes, in 6 or 7 pin. The CGN03 is offered with an interchangeable core prep compatible with BEST, FALCON and ARROW small format cores, and also in large format cylinder versions for SCHLAGE, CORBIN/RUSSWIN, SARGENT and YALE. That is the option to call out if the facility is already keyed on an IC system and you want to pin the cores in house.
9) What is the closest Grade 1 heavy duty cylindrical classroom lock alternative to the Cal-Royal CGN03?
The Cal-Royal CGN03 is a Grade 1, heavy duty cylindrical lockset in the classroom function, where the outside lever is locked and unlocked by key from outside. Among Grade 1 heavy duty cylindrical locksets, the TownSteel CDC-109 and the TownSteel CE/CEI-109 are both Grade 1 heavy duty cylindrical locksets, but both are entrance/office function rather than classroom, and the Falcon K501 is a Grade 1 heavy duty cylindrical lock in the entrance function. Classroom function keeps the locking decision outside the room on a key, while entrance and office functions put a button or turn inside the room, so if the opening is specified for classroom keying the CGN03 function is the one to match.
10) Which cylindrical lock should I use on a 2 inch thick door instead of the Cal-Royal CGN03?
The Cal-Royal CGN03 is built for a 1-3/8 inch to 1-3/4 inch door thickness range as standard. The Falcon K501 Grade 1 cylindrical lock covers 1-3/8 inch to 2-1/4 inch door thickness, so it spans thicker leaves without a special order. The K501 is an entrance function with a push-turnbutton rather than a classroom function, so it changes how the door is secured: the button locks from inside the room instead of a key from the corridor.
11) Is the TownSteel CRX-A-41 a substitute for a Cal-Royal CGN03 classroom lock?
No. The TownSteel CRX-A-41 is a single dummy trim, a Grade 1 heavy duty ligature resistant arch trim cylindrical lockset with no latching or keying function; it is fixed trim for an inactive leaf. The Cal-Royal CGN03 is a keyed classroom lock with a 1/2 inch throw latch and a Schlage C keyway. The CRX-A-41 also fits a 1-3/4 inch door only, while the CGN03 covers 1-3/8 inch to 1-3/4 inch. Use the CRX-A-41 to match trim on an inactive leaf next to a CGN03, not to secure the opening.
12) What keeps a lever lock from being broken off when someone forces the handle?
The Genesys CGN03 uses a clutch: with the lock thrown, the outside lever spins free without retracting the latch, so the force of yanking on it does not transfer into the lock body. Each lever also gets its own spring cage, and the assembly is thru-bolted through the door. In high traffic school and dorm corridors that is the difference between a lever that sags after a year and one that does not. TownSteel's clutched CDC-109 and CEC-109 use the same idea; their CE-109 is non-clutched.
13) What is the bore size for a Cal-Royal CGN03, and will it drop into an existing 161 prep?
The CGN03 uses a 2-1/8 inch diameter cross bore, which is the standard cylindrical lock prep on commercial doors. Paired with the 2-3/4 inch backset and the ASA strike prep, it replaces most existing Grade 1 cylindrical locksets without redrilling the door. Check the backset on the door you are replacing first and order the matching 2-3/4 or 2-3/8 inch option.
14) What is the difference between the Cal-Royal CGN03 and a TownSteel CE-109 or Falcon K501?
Function is the real difference. The CGN03 is a classroom lock, key-locked from the outside only with the inside lever always free. The TownSteel CDC-109, CE-109 and CEC-109 and the Falcon K501 are entrance/office function, meaning the occupant can secure the door from inside. All are Grade 1 heavy duty cylindrical locksets. The Falcon K501 covers a wider door range at 1-3/8 to 2-1/4 inches, so it is worth a look on thick doors where the CGN03 needs the special-order thickness. For a ligature resistant opening in behavioral health, TownSteel's CRX-A-41 arch trim is the different animal, and it is a dummy trim, not a locking function.
15) I need a classroom door that can be locked down remotely. Is a mechanical classroom lock the right choice?
No. The CGN03 is a purely mechanical cylindrical lock; securing it requires a key at the door. If the requirement is lockdown from an office or a central point, you want an electromechanical cylindrical lock such as the BEST 9KW Series, which is built for remote control operation. Keep the mechanical CGN03 for the openings where key control is the whole requirement and there is no power at the door.
16) The Cal-Royal CGN03 has a clutch. Which comparable cylindrical locks also have a clutched lever, and which do not?
The Cal-Royal CGN03 uses a clutch mechanism so the outside lever free-turns in the locked position without retracting the latch, which is what deters lever breakage in high abuse corridors. Among Grade 1 comparables, the TownSteel CDC-109 is a clutched cylindrical lockset and the TownSteel CEC/CECI-109 is a clutched extra heavy duty cylindrical lockset, while the TownSteel CE/CEI-109 is non-clutched extra heavy duty. In a school or dorm where levers get hung on, matching the clutch behavior matters as much as matching the grade.
17) I need a fire rated Grade 1 cylindrical lock. Does the Cal-Royal CGN03 or the Falcon K501 carry a fire rating?
Both do. The Cal-Royal CGN03 is fire rated and UL/cUL listed up to 3 hours, and the Falcon K501 is a Grade 1 heavy duty cylindrical lock that is also fire rated. The functional split is the deciding point on a rated opening: the CGN03 is a classroom function keyed on the outside, and the K501 is an entrance function with a push-turnbutton, so the door schedule for the rated opening determines which one satisfies the spec.
18) If I want a keyless or remotely released cylindrical lock instead of the Cal-Royal CGN03, what is the option?
The BEST 9KW Series is a heavy duty electromechanical cylindrical lock with remote control operation, so the opening is released from a control point rather than by a key at the door. The Cal-Royal CGN03 is a mechanical keyed classroom lock with a single cylinder and a Schlage C keyway; it needs no wiring and no power. Choose the 9KW where access has to be granted remotely and the door has power to it, and the CGN03 where the opening is controlled by key at the lever.
19) I am standardizing an office suite and a classroom wing on one Grade 1 cylindrical platform. How do the Cal-Royal CGN03 and the TownSteel entrance/office locks divide up?
The Cal-Royal CGN03 covers the classroom openings: Grade 1, heavy duty, non-handed, classroom function with the outside lever keyed from the corridor. For the office and entrance doors, the TownSteel CDC-109, CE/CEI-109, and CEC/CECI-109 are all Grade 1 heavy duty cylindrical locksets in the entrance/office function. Non-handed levers on the CGN03 mean one part number serves both swings across the classroom wing, and the ASA/ANSI 4-7/8 by 1-1/4 strike prep matches standard frame prep on the existing openings.
20) What finishes does the Cal-Royal CGN03 classroom lock come in?
Three: US26D satin chrome, US3 polished brass, and US10B antique bronze oiled. US26D is the one to pick if you are matching existing commercial hardware on the rest of the building, since it is the standard institutional finish; US3 and US10B are for openings where the trim package is brass or dark bronze.
21) Will a classroom lock rust in a shower room, pool corridor, or exterior door?
The CGN03 body is cold rolled steel with a zinc dichromate housing for rust resistance, and the retractor is precision cast steel. That is corrosion protection on the internals for humid interior environments, not a marine or coastal spec. The exposed finish is what will show wear first, and satin chrome US26D holds up better than polished brass in wet areas.
How fast can I get the Cal-Royal CGN03-26D 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 Cal-Royal CGN03-26D come with a warranty?
Absolutely. The Cal-Royal CGN03-26D 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 Cal-Royal CGN03-26D?
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