Dexter C2000 Series - Grade 2 Classroom Cylindrical Ball Knob Lock, Non-Clutching, Keyed

Yes. The C2000 covers a 1-3/8 inch to 1-3/4 inch door range as standard, which takes in both the 1-3/4 inch commercial door and the 1-3/8 inch interior doors common in older buildings. It is a commercial-rated lock, so no separate thickness kit is involved inside that range.

The latch face is 1 inch by 2-1/4 inches, and the lock comes with the C2000-ACLS ANSI 1-1/4 inch by 4-7/8 inch curved lip strike. If your frame already has an ANSI 4-7/8 inch strike prep, which is standard on hollow metal commercial frames, it drops in. If the existing opening has a small 1-1/4 inch by 2-1/4 inch T-strike, the frame needs to be cut for the ANSI strike or you reuse the existing one only if the latch face matches.

Yes, if you order the SFIC Prep Less Core version. That one is machined for a small format interchangeable core and accepts a 6-pin or 7-pin core, so your locksmith drops in a core from the system you already run and the lock keys to the existing master. The alternative is the KDC version, a conventional 6-pin Schlage C cylinder supplied keyed different, which you would use where there is no IC system to match.

The C2000 is UL listed 3 hour and carries ANSI/BHMA function F84, the classroom lock designation. That is the pairing an inspector looks for on a rated classroom opening. It is a Grade 2 lock, which is the medium duty commercial tier.

The Sargent 6G04 is a Grade 2 storeroom/closet knob lock with a single cylinder, so it sits at the same ANSI grade as the Dexter C2000 classroom knob but latches to a storeroom function, where the outside knob stays locked at all times and the key retracts the latch. The Dexter C2000 classroom knob is keyed with a single cylinder and locks or unlocks the outside knob by key, leaving it free until the teacher relocks it. Choose by whether the door should ever stand unlocked from the outside.

The Dexter C2000 covers doors from 1-3/8 to 1-3/4 inches. For thicker stock, the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset with an interchangeable core that covers 1-3/8 to 2-1/4 inch doors, and the Corbin Russwin CK4310 is a Grade 1 passage/closet cylindrical knob lock for 1-3/8 to 2 inch doors. The Corbin Russwin CK4851 is a keyed entrance/office cylindrical knob lock with a conventional cylinder covering 1-3/8 to 2 inch doors. Match the function to the opening as well as the thickness.

The Sargent 8XG04 is a Grade 1 heavy duty storeroom/closet single cylinder knob lock with a 2-3/4 inch backset, matching the 2-3/4 inch backset of the Dexter C2000, which is a Grade 2 knob lock. The BEST 8K Series is another Grade 1 heavy duty knob lock, in an entrance function. Both are keyed knob locks at the higher ANSI grade; the function differs from the C2000 classroom function, so confirm the door's locking behavior before substituting on grade alone.

The Grade 3 keyed knob locks include the Cal-Royal BER00 entrance/office knob lock with a Kwikset keyway for 1-3/8 to 1-3/4 inch doors, the Pamex FTF Baron entrance/office knob lockset for the same door range, the Master Lock BC series keyed entry biscuit knob, and the Kwikset 400P-CP keyed entry knob, Grade 3, for 1-3/8 to 1-3/4 inch doors. These are entrance functions at a lower ANSI grade than the Dexter C2000, which is Grade 2 and carries an ANSI/BHMA F84 classroom function designation for commercial use. Where a specification calls out a classroom function or a Grade 2 commercial lock, a Grade 3 entrance knob will not satisfy it.

Dummy and trim-only knobs read as knob locks in a catalogue but carry no latch or cylinder. The BEST 6K Series single dummy trim is a Grade 2 non-keyed cylindrical knob in a dummy function, the Schlage A170 is a Grade 2 single dummy trim knob, the Cal-Royal BA40 is a dummy knob cylindrical lock for 1-3/8 to 1-3/4 inch doors, and the Sargent 78-2875 is an outside knob only with B design. The Dexter C2000 classroom knob is a keyed single cylinder lock supplied with a 2-3/4 inch backset deadlatch and an ANSI 1-1/4 by 4-7/8 inch curved lip strike, so it operates and secures the door. Use a dummy only on an inactive leaf.

No handing to specify. The C2000 is non-handed, so the same lock works on a left or right hand door and on either swing. That matters if you are buying a batch for a floor of doors, because you order one part number and sort them out at install.

The conventional cylinder version, KDC, ships as 6-pin Schlage C keyed different, so each lock arrives on its own key out of the box. To run one key across a set of rooms you either have a locksmith rekey them to a common combination, or order the SFIC Prep Less Core version and install cores from your existing keying system.

Non-clutching means the outside knob stays rigid when locked instead of spinning free. It is the traditional commercial arrangement and it costs less, but a locked rigid knob can be forced by wrenching, where a clutching knob just turns in the hand and gives an attacker nothing. For a normal classroom corridor door with staff-controlled keys, non-clutching is what most Grade 2 knob installations use. If the opening takes real abuse, move up a duty level to something like the Sargent 8XG04 heavy duty Grade 1 knob lock with a 2-3/4 inch backset.

A ball knob requires grasping and twisting, which is why lever trim is what gets specified on accessible openings. The C2000 is offered in knob or lever trim, so if the opening is on an accessible route, order the lever version of the series rather than the ball knob. The function, backset, latch, and strike are the same either way.

Not on a commercial opening that has to hold a rating. The C2000 is a commercial Grade 2 lock, UL listed 3 hour, with ANSI/BHMA F84 classroom function. Residential knobs such as the Kwikset 400P-CP are Grade 3 entry function, which is a different lock behavior and a lower duty tier. Entry function has an inside button; classroom function does not, and that difference matters where code or a lockdown policy governs the door.

No. The Sargent 28C-KNOB is exit device trim with a knob and rose in an entrance function for 1-3/4 inch doors, so it mounts to an exit device rather than boring into the door on its own. The Dexter C2000 is a cylindrical knob lock for doors 1-3/8 to 1-3/4 inches thick with its own 2-3/4 inch backset deadlatch and strike. If the door already carries a panic device, the Sargent trim is the correct part; if the door is a standard bored opening, the C2000 is.

For an unkeyed opening in the same Grade 2 cylindrical knob family, the Corbin Russwin CK4410 is a Grade 2 passage/closet cylindrical knob lock, non-keyed, for doors 1-3/8 to 1-3/4 inches thick, which is the same door thickness range the Dexter C2000 covers. The Falcon W101 is a Grade 2 cylindrical knob lock in a passage/closet latch function with a 2-3/4 inch backset, matching the C2000 backset. The Arrow MK01 and RK01 are Grade 2 passage cylindrical knob locks, also for 1-3/8 to 1-3/4 inch doors, with the RK01 carrying a ball knob. None of these are keyed, so they suit corridor and closet doors rather than a classroom door that must be secured.

The Dexter C2000 is offered in an SFIC prep less core configuration alongside the conventional 6-pin Schlage C keyed different cylinder, and the C2000 accommodates SFIC to accept 6-pin or 7-pin cores. Among comparable knob locks, the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset supplied with an interchangeable core. The X101 is a passage function, so it carries no cylinder duty on the door itself; the C2000 classroom function is the keyed option where the core actually controls access.

The Lockey 3830 is a mechanical keyless combination knob lock with an auto-locking passage function, covering doors 1 3/16 to 2 inches thick. It opens on a pushbutton code rather than a key, so no cylinder or keying is involved. The Dexter C2000 is keyed with a single cylinder, taking a 6-pin Schlage C conventional cylinder or an SFIC core, which is what puts it on a facility master key system. Pick the Lockey where a door should stay off the key system, the C2000 where it must be keyed alike with the rest of the building.

The Callan Edgewood is a Grade 2 entrance knobset and the Callan Roland is a Grade 2 entrance knobset in US15 satin nickel. Both are entrance function, where the outside knob is locked from a push or turn button on the inside and the key retracts it from outside. The Dexter C2000 is a Grade 2 classroom function knob lock keyed with a single cylinder, which has no inside button at all: the door is locked and unlocked only by key from the corridor side. That distinction is the reason a classroom function is specified for occupied instructional spaces.

Three finishes: 605 bright brass, 613 oil-rubbed bronze, and 630 satin stainless steel. 630 is the common commercial standard and is what most schools, healthcare, and office corridors are already running, so that is the one that usually matches existing hardware. Each of the three is available with either the conventional Schlage C cylinder or the SFIC prep.

The Dexter C2000 is a commercial ball knob lock with a Grade 2 rating and an ANSI 1-1/4 by 4-7/8 inch curved lip strike. Decorative knob alternatives include the Baldwin Estate 5000 Baltimore knob passage lock with a 2-3/8 inch backset and full lip strike, the Deltana 6901 Portland knob entry set for 1-3/8 to 1-3/4 inch doors, and the Schlage Residential F500 Plymouth with Georgian knob combo pack with adjustable backsets and dual strikes for 1-3/8 to 1-3/4 inch doors. These use residential trim and different strike preparations, so the frame mortise and backset need checking against the existing opening.