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 605 S4 NOS BF is the Corridor SFIC Summit Lever, Square 2-3/4, No Strike Best F SFIC version in Bright Brass.

• Corridor SFIC Summit Lever
• Square 2-3/4
• No Strike Best F SFIC
• Finish 605 Bright Brass
• Part number QCL155 M 605 S4 NOS BF