Standard operation, key locks and unlocks thumbturn. Optional operation, key unlocks thumbturn, re-locks when key is removed. This operation is created by changing the cylinder plate included with...
Thumbturn control has a forged brass 7/8 In. (22 mm) thick escutcheon. Often used with DT trim or pull. An NL cylnder plate is included for thumbturn operation only when key is used. BE blank...