F51 ANSI F81
Entrance Lock
Unlocked by key from outside when
outer knob is locked by turn-button
in inside knob. Inside knob/lever
always unlocked.
F Functions - ANSI A156.2, Series 4000, Grade 2
• Radius and circular face plates for F10/F40 functions
• Radius, square, and circular face plates for F51, F358 function
• 6 pin solid brass cylinder, keyed 5 pin
• Universal backset either 2-3/8” or 2-3/4”
• 1-3/8” - 1-3/4” thick door
F51 ANSI F81
Entrance Lock
Unlocked by key from outside when
outer knob is locked by turn-button
in inside knob. Inside knob/lever
always unlocked.
F Functions - ANSI A156.2, Series 4000, Grade 2
• Radius and circular face plates for F10/F40 functions
• Radius, square, and circular face plates for F51, F358 function
• 6 pin solid brass cylinder, keyed 5 pin
• Universal backset either 2-3/8” or 2-3/4”
• 1-3/8” - 1-3/4” thick door