All of  the mortise locks in the 4040 Series feature the same size mortise case shown here.

Case Depth: 70mm (2 6/8") 

                    *Special Order 80mm (3 1/8")

Case Height: 141mm (5 9/16")

Case Thickness: 15mm (5/8")

Faceplate width: 20mm (13/16")

Faceplate length: 200mm (7 7/8")

Backset: Distance from front of faceplate to center of handle/keyhole: 40mm (1 9/16")

                        *Special Order 50mm (2")

For privacy and locking models only (4040WC, 4040Z & 4040):

Centers: 60mm (2 3/16") distance from center of handle hole to center of keyhole.

Anti-vibration Latch:  All 4040 series locks now come standard with the 3-prong anti-vibration latch.  The basic one-piece latch is available upon request.

4040 Strike Plate (4026) (for models 4040WC, 4040 & 4040Z)

Length: 185mm (7 5/16")

Width: 20mm (13/16")

Tongue width: 31mm (1 2/8")

Tongue/Lip Length: 15mm (5/16") standard length in stock (dimension of 45mm is 20.5 on stock strikes).