Recessed lock by AGB, in gold color, with dimensions 40-90mm.

The total length of the cylinder of a lock consists of two dimensions:

• The first from one edge to the center of the cylinder, where the screw is placed.
• The second concerns the distance from the center to the other edge of the cylinder.

Usually, the hole for the screw is not exactly in the middle of the cylinder and the part with the smaller dimension is placed on the exterior side of the door.

In this case, the total length of the cylinder is 130mm, with the part from the screw slot to the exterior part of the door being 40mm and the part from the slot to the interior part of the door 90mm.