Deltana CL509FLC Commercial Classroom Standard Grade 1, Clarendon Lever, with Cylinder

The CL509FLC ships with a 2-3/4 inch backset as standard. A 2-3/8 inch backset latch is sold separately, so if your existing bore is drilled at 2-3/8 inches you need to order that latch along with the lock. Door thickness range is 1-3/8 to 2 inches, which covers standard 1-3/4 inch commercial doors and older 1-3/8 inch interior doors.

Classroom function means the outside lever is locked and unlocked only by key from the outside; there is no inside button or thumbturn. The inside lever always retracts the latch for free egress. On the Deltana CL509FLC that key control runs through a single cylinder on the outside.

The CL509FLC uses a Schlage C type keyway, so it drops into a building already keyed on Schlage C. Keying is selectable at order time as keyed different or keyed alike, and you can also submit a key code to have it cut to your existing system.

It comes with an ANSI strike, 4-7/8 by 1-1/4 inch lip-to-center. If your frame is already cut for a standard ANSI 4-7/8 inch strike, which most hollow metal commercial frames are, it drops in with no frame work. A frame prepped only for a small 2-3/4 inch T-strike would need modification.

The Dexter C1000 Series classroom cylindrical lever lock is the nearest match: it is also a Grade 1 keyed classroom-function cylindrical leverset. The Dexter unit is clutching and lists a door thickness range of 1-3/8 inch to 1-3/4 inch, while the Deltana CL509FLC covers 1-3/8 inch to 2 inch doors and uses a Schlage C keyway with a 2-3/4 inch backset.

Yes. The Cal-Royal AG03 classroom lever is a Grade 2 lockset with a 6-pin Schlage C keyway keyed different and a 2-3/4 inch backset, so it shares the keyway and backset of the Deltana CL509FLC while sitting at Grade 2 instead of Grade 1.

No handing to specify. The CL509FLC is universal, so the same lock works on a left or right hand door and you can stock one part for a whole building.

Grade 1 is the top ANSI/BHMA commercial durability tier, and the CL509FLC is built as a commercial Grade 1 cylindrical lock with steel and zinc construction. It also uses fixed through-bolts, which keeps the roses clamped through the door instead of relying on screws into the chassis alone, a common failure point on abused openings.

The Dexter C1000 Series classroom lever is the closest equivalent, also Grade 1 classroom function with a clutching lever, rated for 1-3/8 to 1-3/4 inch doors. If you need the key to also lock the inside lever for lockdown, the Dexter C1000 Classroom Security version covers that. On a lighter duty budget opening, the Cal-Royal AG03 is a Grade 2 classroom lever on a 2-3/4 inch backset with a 6-pin Schlage C keyway, which keys into the same system as the Deltana.

The CL509FLC is a cylindrical, tubular chassis lockset, so it mounts in a standard bored door prep rather than a mortise pocket. If your doors are prepped for a mortise lock body, this is the wrong type and you want a mortise lockset instead.

The cylinder is included. It is a single cylinder keyed lock in Schlage C keyway, supplied with the lockset, so there is nothing extra to buy unless you need the 2-3/8 inch backset latch.

For a storeroom opening where the lever is always locked outside, the Cal-Royal AG05 is a Grade 2 storeroom leverset with a deadlocking latchbolt for 1-3/8 inch to 1-3/4 inch doors, and the Hager 2580 is a Grade 2 storeroom cylindrical lock with the Withnell lever for 1-3/8 inch to 2 inch doors. The Deltana CL509FLC is a classroom function, which unlocks and relocks by key.

Only where no locking is needed. The Deltana CL509FLC is keyed with a single cylinder in classroom function. Non-keyed Grade 1 passage options include the Falcon K101, a heavy duty fire-rated passage cylindrical lock for 1-3/8 inch to 2-1/4 inch doors, and the Corbin Russwin CL3110 vandal resistant passage lever for 1-3/4 inch to 2 inch doors.

They are different functions. The Deltana CL509FLC is classroom function, keyed outside with a single cylinder. Entrance and office style peers include the Falcon B511CP6D, a Grade 2 medium duty entry/office cylindrical lever, the Hager 2525 Grade 2 commercial entry lock for 1-3/8 inch to 2 inch doors, and the Cal-Royal AUS00 Grade 3 entrance/office lever. Entrance/office functions typically allow the outside lever to be locked from inside, which classroom function does not.

For that, an asylum or institution function is the match: the Dexter C1000 Series asylum (F87) lock is Grade 1 for 1-3/8 inch to 2 inch doors, and the Arrow MK33-BD-CS is a heavy duty asylum/institution/utility cylindrical lock with a ball knob and a conventional Schlage C keyway cylinder. The Deltana CL509FLC is a classroom function with a single cylinder on the outside only.

They serve different openings. The Deltana CL509FLC is a commercial Grade 1 keyed classroom leverset. The Kwikset 200BRNL Breton is a Grade 3 passage lever for 1-3/8 to 1-3/4 inch doors and the Kwikset 300BRNL Breton is a Grade 3 privacy lever; Baldwin Estate 5103 comes in passage, privacy and half dummy versions. None of those are keyed classroom function.

The Deltana CL509FLC covers 1-3/8 inch through 2 inch door thickness, which spans most hollow metal and wood commercial doors. If you are comparing, the Dexter C1000 classroom lever lists 1-3/8 inch to 1-3/4 inch, while the Dexter C1000 asylum version lists 1-3/8 inch to 2 inch.

The Deltana CL509FLC is a mechanical keyed classroom lever with no electrical provision. For access control, the Corbin Russwin CL33903 is a Grade 1 fail safe electrified cylindrical lever lock in 12VAC/DC for 1-3/4 inch to 2 inch doors, offered with an NZ lever and D rose.

Three: Oil Rubbed Bronze, Brushed Chrome, and Polished Brass. If you are matching an existing corridor of satin chrome hardware, Brushed Chrome is the one to pull; Oil Rubbed Bronze is the match for darker bronze trim packages.

If you want to drop keys entirely, the Lockey 2835 mechanical pushbutton keyless lever lock is ADA compliant in passage function for 1-3/16 inch to 2 inch doors, the Lockey 1150 is a heavy duty mechanical keypad lever set for 1-1/8 inch to 2 inch doors, and the Delaney LP250 is a Grade 2 electronic keypad leverlock. The Deltana CL509FLC is keyed on a Schlage C keyway instead, which lets it join an existing key system.

The CL509FLC is a keyed classroom Clarendon leverset, not a trim-only unit. Where an inactive leaf needs matching pull trim, Grade 1 options include the BEST 9K Series 1DT single dummy trim cylindrical lever and the Accentra 455LN Augusta heavy duty Grade 1 single dummy from the 5400 Series; the BEST 7KC Series 1DT is the Grade 2 medium duty counterpart. Lever styles differ from the Clarendon design.