Cylinders for lock casings are available in two standard types, Oval Profile and Euro Profile. These recognised standards now cover practically all types of lock cylinder with the difference being the shape of the cylinder.
As the name suggest an Oval Profile Cylinder is oval in shape and is used together with a Mortice Lock or mortice lock case. The cylinder fits through the lock casing and when using a handle through the back plate. It is important that when selecting the correct cylinder the cut out shapes must match for both the handle back plate and lock casing.
A Euro Profile Cylinder is keyhole shaped and operates in exactly the same way as an Oval cylinder. Again you must ensure that all components of the locks will accept the Euro Profile shape.
Both Oval and Euro Profile cylinders are available in varying lengths to suit different door widths. Each shape can also be purchased as a single cylinder which is a half-length cylinder and can only be locked or unlocked from one side of the door.
We also supply Thumb Turn Oval and Euro Profile Cylinders which include a key on one side and a thumb turn on the other allowing the lock to be unlocked simply by turning the thumb turn. A Thumb Turn Cylinder is often used with UPVC Door Locks.