Manufacturer: Asidrama. The 2-1/2″x2-1/2″ mounting plate ensures a stable base, while the adjustable deadbolt accommodates both 2-3/8″ (60MM) and 2-3/4″ (70MM) backsets. Suitable for door thicknesses ranging from 1-3/8″ (35MM) to 1-3/4″ (45MM), and with a fully reversible lever, these door handles are perfect for both right-handed and left-handed doors.