Deltana CL509FRCNC Commercial Classroom IC Core Grade 1, Clarendon Lever less Cylinder

No. The CL509FRCNC ships less cylinder, so you supply the interchangeable core yourself. It is a single cylinder keyed function, meaning one keyed core on the outside lever only. Locksmiths standardizing a school or campus on an existing IC core system order it this way on purpose and drop in their own cores to match the master key system already in the building.

The Clarendon CL509FRCNC covers 1-3/8 inch through 2 inch doors, which takes in standard 1-3/4 inch commercial doors, older 1-3/8 inch interior doors, and thicker 2 inch openings without needing a different chassis.

It comes 2-3/4 inch backset as supplied. A 2-3/8 inch backset is sold separately, so if your existing cross bore is 2-3/8 inches off the edge (common on residential-prep doors), order that latch rather than trying to make the 2-3/4 work.

Yes, if the frame is cut to the ANSI standard. The Clarendon classroom lever uses an ANSI 4-7/8 inch strike with 1-1/4 inch lip-to-center, so it drops into a frame already prepped for that strike with no new mortise.

Classroom function means the outside lever is locked and unlocked by key only, and the inside lever always retracts the latch for free egress. There is no inside button or thumbturn, so a student cannot lock the door. If you want the teacher to be able to lock down from inside the room with a key, that is classroom security function instead, like the Dexter C1000 Series Classroom Security lever.

For a non-keyed opening, a passage lever is the right part. Grade 1 options include the Falcon K101 passage cylindrical lock with non-handed levers, rated for heavy duty use, fire rated, and covering doors 1-3/8 inch to 2-1/4 inch thick, and the Corbin Russwin CL3110 vandal resistant passage lever in the CL3100 Series. The Deltana CL509FRCNC is a keyed classroom function lock with a single cylinder, so it carries key control the passage locks do not.

The Dexter C1000 Series classroom lever is the closest match: it is a Grade 1 cylindrical classroom lever lock supplied keyed, with a clutching lever and a 1-3/8 inch to 1-3/4 inch door thickness range. The Deltana CL509FRCNC is also a Grade 1 classroom cylindrical leverset, but it is built for an interchangeable core and ships without the cylinder, so the core is ordered separately. Choose the Dexter where a single keyed lock is wanted out of the box, and the CL509FRCNC where the core is being pulled from an existing IC keying system.

The Deltana CL509FRCNC is a classroom function lock, keyed with a single cylinder: the outside lever is locked and unlocked by the key from the corridor side. The Dexter C1000 Series classroom security lever is a Grade 1 clutching keyed lock built to the classroom security function, which uses cylinders on both sides so the door can be secured from inside the room. If a district specification calls for locking from within the classroom, the security function lock is the one to order.

No handing to specify. The CL509FRCNC is universal, so one part number works on left or right hand doors and you can stock a single SKU for a whole building.

It is a Grade 1 commercial cylindrical lockset, which is the highest ANSI/BHMA duty level for bored locks and the one specified for high-traffic institutional openings. Chassis and trim are steel and zinc.

Tubular cylindrical, not mortise. It installs in a standard bored door prep (cross bore through the face plus an edge bore for the latch), so there is no lock case pocket to rout. If your doors are already prepped for a mortise lock body, this will not go in without new doors or a filler plate.

The Cal-Royal AG03 classroom lever is a Grade 2 lock in the AG Series with a 6-pin Schlage C keyway supplied keyed different and a 2-3/8 inch backset. The Deltana CL509FRCNC is a Grade 1 classroom leverset with a 2-3/4 inch backset as standard (2-3/8 inch sold separately) and takes an interchangeable core. The AG03 arrives keyed on a conventional Schlage C cylinder; the Deltana is the choice when the door must join an IC core master key system or when Grade 1 cycle performance is specified.

They are not interchangeable in function. A storeroom lever such as the Cal-Royal AG05, a Grade 2 storeroom lockset with a deadlocking latchbolt for doors 1-3/8 inch to 1-3/4 inch thick, or the Hager 2580 Grade 2 storeroom lock with Withnell lever, keeps the outside lever locked at all times and requires a key for every entry. The Deltana CL509FRCNC classroom function allows the outside lever to be left unlocked for free passage and relocked by key, which is what a classroom or similar occupied room usually needs.

For asylum or institutional utility openings, the Dexter C1000 Series asylum lock (F87) is a Grade 1 cylindrical lock for doors 1-3/8 inch to 2 inch thick; the Arrow MK33-BD-CS is a heavy duty asylum lock with a ball knob and a conventional Schlage C keyway cylinder. Those functions key both sides for full control. The Deltana CL509FRCNC is a Grade 1 classroom lever with a single cylinder on the outside only.

Keyless lever locks handle that. The Lockey 2835 mechanical pushbutton keyless lever lock has passage function and is ADA compliant, fitting doors 1 3/16 inch to 2 inch thick; the Lockey 1150 heavy duty mechanical keypad lever set covers 1-1/8 inch to 2 inch doors and is offered with an adjustable backset. The Deltana CL509FRCNC is a keyed mechanical classroom lock using an interchangeable core, so it stays inside a key system rather than a code system.

Entrance and office function locks fit that use. The Falcon B511CP6D is a Grade 2 cylindrical lever with entry/office function in medium duty, and the Hager 2525 is a Grade 2 commercial cylindrical entry lock with lever handle for doors 1-3/8 inch to 2 inch thick. Entry/office locks are typically locked and unlocked by a pushbutton or thumbturn from inside, while the Deltana CL509FRCNC classroom function is controlled only by the key on the outside, which suits rooms where occupants should not set the lock themselves.

Two: Brushed Chrome and Polished Brass. Brushed Chrome is the one that blends with the satin chrome and satin nickel hardware on most commercial corridors; Polished Brass suits older buildings still running bright brass trim.

Yes, that is the usual pairing, but the dummy is a separate part with no latch. Grade 1 options include the BEST 9K Series 1DT single dummy trim cylindrical lever, a non-keyed heavy duty trim, and the Accentra 455LN Augusta heavy duty Grade 1 single dummy cylindrical lever. The Deltana CL509FRCNC is the working keyed classroom lever for the active leaf and is not a trim-only item.