Kaba Ilco Classroom Turnknob Mortise Cylinders

It's the cylinder half of a classroom-function mortise setup, with a turnknob instead of a key on one side. Kaba Ilco's classroom turnknob mortise cylinders are commercial-rated door hardware, sold as a replacement part, so you're buying them to re-key or re-finish an existing mortise lock or storefront device rather than as a complete lockset. The knob side lets someone secure or release the function by hand without a key; the other side takes the key.

Four lengths: 1 inch, 1-1/8 inch, 1-1/4 inch and 1-5/16 inch. Measure the cylinder you're pulling out, from the face of the shell to the back where the cam sits, and match it. Too short and the cylinder sits below the trim ring; too long and it stands proud of the face and can bind against the trim.

Two cams are offered, standard and Adams Rite. If the cylinder is going into an aluminum storefront door with an Adams Rite style deadlatch or deadbolt, take the Adams Rite cam. If it's going into a conventional hollow metal or wood door mortise lock body, take the standard cam. The cam is the tailpiece that actually drives the lock, so the wrong one threads in fine and then does nothing.

No handing to specify. The Ilco classroom turnknob mortise cylinder is rotation limited and field handed, so the same part covers either hand and you set it at install. That matters if you're stocking a truck or standardizing across a building: one part number covers both sides of a pair.

Yes, if you order the Adams Rite cam. That's the cam pattern storefront deadlatches and hook bolts use. Match the length to the existing cylinder as well, choosing from 1, 1-1/8, 1-1/4 or 1-5/16 inch, since storefront stiles are shallow and an overlong cylinder will sit outside the face.

That's what these are for. Ilco brass mortise cylinders are sold as replacement parts, so if the lock body still works and you only need to re-key, change the keyway, or change the finish, you pull the cylinder and thread a new one in. You need three things to match: the length, the cam (standard or Adams Rite), and the finish.

Just the cylinder. It's the mortise cylinder with a turnknob, not a lock body, not trim, not a strike. If you're building a classroom opening from scratch you still need the mortise lock case and trim; if you're repairing or re-keying one that already exists, this is the part you want.

Eleven finishes: bright brass, satin brass, antique brass, satin bronze, oil rubbed bronze, satin nickel, bright chrome, satin chrome, black aluminum, bright stainless steel and satin stainless steel. That spread covers both the brass-family and the chrome/stainless-family openings in most buildings, so a property manager replacing cylinders across a mixed fleet can usually match what's already hanging rather than re-doing whole doors.

Four lengths, two cams and eleven finishes, which is a broad enough grid to cover both the storefront entrances and the interior mortise locks in one order from one brand. For an institutional buyer that's the point of the line: pick the finish standard for the facility, then vary only length and cam by opening.