3921 - Cylinder with Large Round Turn


For use with locks accepting Euro profile cylinders.


Fitting of Cylinder

Cylinders are supplied with fixing screw.

Standard lengths are 61mm and 71mm.

Extended length cylinders are also available up to +40+40 in size (160mm Overall).

Decorative and security accessories are available: see Door Furniture section.


Optional functions

A1 - Classroom function, clockwise rotation

B1 - Classroom function, anti-clockwise rotation

C1 - Clutch release function



Available in satin chrome finish


Cylinders for Locks

Tested in accordance with BS EN 1303:2015


1 6 0 B 0 C 6 D*

*when used with appropriate security escutcheon

Fire Rated

Tested in accordance with BS EN 1634-1:2000

Product range is suitable for use on fire resistant and smoke control doors.