Kwikset Cylinder Deadbolts

660 Series Standard Duty
Kwikset offers the standard duty, 660 Series of quality crafted 1"
deadbolt Deadbolt for extra protection at an economical price. They are
the largest selling cylinder Deadbolt in America.
Kwikset Cylinder Deadbolts fit door thicknesses from 1-3/8" to 1-3/4".
660 Series Deadbolts are furnished standard with 2-3/8" backset. No.
2732 deadbolt available for 2-3/4" backset.
Single Cylinder Deadbolt No. 660
Deadbolt is locked or unlocked with a key from the exterior, turnpiece
from the interior.
One Sided Deadbolt No. 663
Deadbolt is locked or unlocked only from the interior with an interior
turnpiece. Eliminates the possibility of picking.
Double Cylinder Deadbolt No. 665
Uses key from either exterior or interior to retract deadbolt. Ideal for
doors with glass areas.