GMS Profile Cylinder, T-Turn

The GMS PR12 profile cylinder is cut on the Schlage C keyway, so it accepts Schlage C keys and can be keyed alike or master keyed into an existing Schlage C system. If the building runs a restricted or proprietary keyway instead, this one won't key into it.

A T-turn profile cylinder is keyed on one side and has a thumbturn on the other, so the door is operated by key from outside and by hand from inside without a key. That is the configuration for a room someone occupies, like an office, storeroom or interior glass door, where egress shouldn't depend on carrying a key. If you need key operation from both sides, you want a double-keyed profile cylinder instead, not this one.

Conventional. The PR12 is a standard pin tumbler cylinder, pinned to the Schlage C keyway, not a small format or large format interchangeable core. That matters if your facility is standardized on SFIC and you swap cores rather than cylinders: a conventional cylinder has to be rekeyed at the bench or by a locksmith, not pulled with a control key.

Yes, as long as those locks are on the Schlage C keyway. The PR12 is a conventional cylinder on Schlage C, so a locksmith can pin it to your existing bitting and bring the door onto the same key or master key as the rest of the openings. Property managers standardizing a fleet of doors should confirm the existing cylinders are C keyway and not a restricted variant before ordering.

Don't assume it does. The PR12 is sold as a keyed profile cylinder and nothing ties it to a specific lock body, so the only safe way to buy is to match the profile cylinder dimensions your lock case calls for. For Codelocks CL4000 and CL4500 glass door locks, the strike side accessory we carry is the CDL-CL4000-RSB glass door strike box; the cylinder itself needs to be confirmed against the lock manufacturer's cylinder spec.