This is a heavy duty cylindrical lock from Stanley Security, sold as a Grade 1 lock. It fits standard bored door preps and uses a small format interchangeable core (SFIC) cylinder. Lever design, backset, front shape, strike and core options vary by part number. Part QCL171 A 619 FS4 NOS LC is the Storeroom SFIC Slate Lever, Square 2-3/4 With 3/4 Throw, No Strike Less Cylinder version in Satin Nickel.

• Storeroom SFIC Slate Lever
• Square 2-3/4 With 3/4 Throw
• No Strike Less Cylinder
• Finish 619 Satin Nickel
• Part number QCL171 A 619 FS4 NOS LC