This is a Stanley Grade 1 heavy duty cylindrical lock for commercial doors. It uses a small format interchangeable core (SFIC) cylinder, so it fits openings that run an SFIC keying system. Lever style, backset, strike and cylinder options vary by part number. Part QCL155 M 619 FS4 NOS LC is the Corridor SFIC Summit Lever, Square 2-3/4 With 3/4 Throw, No Strike Less Cylinder version in Satin Nickel.

• Corridor SFIC Summit Lever
• Square 2-3/4 With 3/4 Throw
• No Strike Less Cylinder
• Finish 619 Satin Nickel
• Part number QCL155 M 619 FS4 NOS LC