Rim Cylinder Lock Range
Rim Cylinders (more commonly called a 'Yale' lock) are designed to be used with night latches, replacing the outside locking mechanism.
Rim cylinders are standard in size and fixings so different brands are easily interchangeable. There are a couple of brands however that are specific to the night latch on the back of the door i.e These include the Chubb and Ingersoll locks as shown below.
We can offer a majority of these rim cylinders keyed alike and masterkeyed, please call for more info.