Dexter C1000 Series - Grade 1 Classroom Security Cylindrical Lever Lock, Clutching, Keyed

Classroom security is a double cylinder function: there is a keyed cylinder on both sides, so a teacher can lock or unlock the outside lever with a key from inside the room without opening the door and stepping into the corridor. A standard classroom lock is keyed outside only, which forces you into the hallway to lock down. The C1000 carries the ANSI/BHMA F88 function designation for this, and the lever clutches so force on a locked lever does not drive the mechanism.

The C1000 ships with an ANSI 1-1/4 x 4-7/8 inch curved lip strike (C1000-ACLS), which is the standard ANSI strike prep on commercial hollow metal frames, so it drops into an existing ANSI cutout. The latch is a 1 inch diameter deadlatch with a 1-1/8 x 2-1/4 inch square corner beveled face. If your frame has a smaller residential T-strike or round corner prep, you will need to modify the frame or use a wrap.

Yes. The conventional cylinder option is a 6-pin Schlage C keyway cylinder, supplied keyed different, so a locksmith can rekey it into an existing Schlage C system. If your building runs small format interchangeable core instead, order the SFIC prep less core version and drop in your own 6-pin or 7-pin core.

It is UL listed for 3 hour openings and Grade 1, so it can go on a labeled fire door. Use the supplied deadlatch, not a plain spring latch, and keep the ANSI strike, because the deadlatching plunger is what keeps the door positively latched under fire conditions.

The Cal-Royal AG03 is the nearest classroom-function lever in the Cal-Royal AG Series, a Grade 2 classroom lever with a 6-pin Schlage C keyway keyed different on a 2-3/4 inch backset. The Dexter C1000 classroom security lever is Grade 1, ANSI/BHMA F88, non-handed, on the same 2-3/4 inch backset, and accepts Schlage C 6-pin conventional cylinders or an SFIC prep taking a 6-pin or 7-pin core. Both key into an existing Schlage C system, so the decision comes down to the grade the facility specifies and whether interchangeable core is part of the keying program.

A storeroom function is the right call there. The Cal-Royal AG05 is a Grade 2 storeroom lever lockset with a deadlocking latchbolt and a 1-3/8 to 1-3/4 inch door thickness range, and the Hager 2580 is a Grade 2 storeroom cylindrical lock with the Withnell lever covering 1-3/8 to 2 inch doors. The Dexter C1000 classroom security lever is built for a teaching space where staff need to key the outside lever locked or unlocked from either side rather than for a door that must stay locked at all times.

Four choices. Cylinder: conventional 6-pin Schlage C keyed different, or SFIC prep less core if you supply your own cores. Finish: 626 satin chrome or 613 oil-rubbed bronze. Lever design: curved or regular, both clutching. Backset: 2-3/4 inch standard or 2-3/8 inch. SFIC prep ships without a core, so budget cores separately for those.

The C1000 is a cylindrical (bored) lever lock, which means a standard 2-1/8 inch cross bore and edge bore rather than a mortise pocket. If your doors are already prepped for bored locks, this is the direct route to a lockdown-capable opening: you are swapping the lock, not cutting the door. Mortise makes sense when the door already carries a mortise pocket or when you need a deadbolt and latch in one case. Going bored to mortise means a new door prep.

Function and duty level. The Cal-Royal AG03 is a Grade 2 classroom lever with a 6-pin Schlage C keyway and a 2-3/4 inch backset, keyed outside for a traditional classroom function. The C1000 is Grade 1 with a double cylinder classroom security function, so it locks from inside the room by key. If the specification only calls for a classroom lock and not inside lockdown, the AG03 matches the backset and keyway. If the district wants teachers locking down without opening the door, the C1000 is the one that does it.

For the non-keyed openings in the same run, the Falcon K101 is a Grade 1 passage cylindrical lever, fire rated, covering a 1-3/8 to 2 inch door range, and the Corbin Russwin CL3110 is a Grade 1 fire rated passage/closet lever for 1-3/4 to 2 inch doors. Both are Grade 1 like the C1000, so the corridor holds one duty level even though the trim will not match across brands. Keep the C1000 on the doors that need lockdown.

That is what the clutch is for. When the outside lever is locked, it spins free instead of transmitting torque into the lock body, so someone hanging on the handle loads the trim rather than the retractor. Combined with Grade 1, it is aimed at high traffic openings like classrooms and corridors.

No. The Dexter C1000 is a classroom security lever, ANSI/BHMA F88, with a double cylinder keyed arrangement. Entrance and office levers such as the Falcon B511CP6D, a Grade 2 medium duty entry/office cylindrical lever, the Hager 2525 Grade 2 commercial entry lock, and the Cal-Royal AG00 Grade 2 entrance lever with a 6-pin Schlage C keyway on a 2-3/8 inch backset are locked and unlocked from the inside by the occupant. If a school specification calls for the outside lever to be controlled only by key, an entrance or office lever will not satisfy it.

Pair the keyed opening with non-keyed levers at the same duty level. The Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, the Falcon T101 is a Grade 1 heavy duty passage lever with pressure release technology in the T Series, and the Design Hardware X75 is a Grade 1 flat lever passage lockset for 1-3/4 inch doors. For a door leaf that needs trim only and no latch, the BEST 9K Series 1DT is a Grade 1 non-keyed single dummy trim lever. The Dexter C1000 classroom security lever is non-handed as well, so a corridor mixing these keeps one lever pull direction throughout.

A keypad lever changes how the door is controlled. The Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function fitting 1-1/8 to 2 inch doors, the Lockey 2835DC is a double combination mechanical keyless lever with passage function for 1 3/16 to 2 inch doors, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. The Dexter C1000 classroom security lever is a Grade 1 keyed lock taking Schlage C 6-pin cylinders or an SFIC core, so it stays inside an existing master key system while a keypad lock is administered by code instead.

That calls for an electrified lock. The Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock running on 12VAC/DC for 1-3/4 to 2 inch doors, offered with the NZ lever and D rose in the CL33903 Series. The Dexter C1000 classroom security lever is a mechanical cylindrical lock, UL listed 3 hour, controlled by key at the door with no wiring to the frame, which suits an opening where access is managed by the keying schedule rather than by an access control panel.

Grade 3 levers such as the Kwikset 200BRNL Breton passage lever for 1-3/8 to 1-3/4 inch doors, the Master Lock RL Series keyed entry lever, the Cal-Royal AUS00 entrance and office lever with a solid brass forged body for 1-3/8 to 1-3/4 inch doors, and the Callan Artino entrance leverset are built to a lighter cycle standard than commercial traffic. The Dexter C1000 classroom security lever is Grade 1 and marked commercial, with a 1-1/8 by 2-1/4 inch square-corner beveled latch and the ANSI 1-1/4 by 4-7/8 inch curved lip strike that a commercial frame is already prepped for.

Privacy levers such as the Hager 2540 with the Withnell lever for 1-3/8 to 2 inch doors and the Kwikset 300BRNL Breton privacy lever for 1-3/8 to 1-3/4 inch doors are pushbutton bathroom and bedroom locks with an emergency release, not key controlled. The Dexter C1000 is a classroom security lever, ANSI/BHMA F88, with a double cylinder keyed arrangement and a deadlatch on a 2-3/4 inch backset, which is the function a school security specification is written around.

Two finishes are offered: 626 satin chrome and 613 oil-rubbed bronze. 626 is the usual match for institutional and school corridors where the closers, hinges and exit devices are already satin chrome. 613 suits darker bronze packages. Both finishes come with either cylinder option and either lever design.

The Dexter C1000 classroom security lever is Grade 1 with a 2-3/4 inch backset and a 1 by 2-1/4 inch latch faceplate. The Cal-Royal AG03 classroom lever is Grade 2 on the same 2-3/4 inch backset, and the Arrow MK33-BD-CS is a Grade 2 heavy duty asylum and institution lock with a ball knob and a conventional Schlage C keyway cylinder. All three key into a Schlage C program, so a facility standardizing on one grade across a wing should confirm which grade the door schedule calls out before mixing them.

Knob locksets such as the Arrow HK11 turn-pushbutton entrance ball knob for 1-3/8 to 1-3/4 inch doors and the Arrow MK33-BD-CS asylum and institution ball knob with a Schlage C keyway cover different functions and use a knob rather than a lever. The Dexter C1000 uses a clutching lever in curved or regular designs, which is the trim style that meets ADA operable hardware requirements in a school or public facility.