CISA 56378 110 mm Backset Three-stage bolt only Mortise lock (156378110)

Lock and fitting dimensions

Check the backset, centre distance, faceplate and mounting points against the specific model drawing.

Specifications

Product series

56378

Backset

110 mm

Applicable door construction

Door crossrail

Body construction

Three-stage bolt only

Faceplate width

25 mm

Faceplate thickness

3 mm

Case height

64 mm

Case material

Galvanized steel

Faceplate material

Stainless steel

Bolt throw stages (original term Throws)

3

Cylinder fixing

Screw inside the lock body

Selecting construction and installation dimensions

This row of 56378 has a fixed backset of 110 mm. Check the distance from the door-edge faceplate reference to the cylinder centre axis; overall case depth cannot substitute for it. The 64 mm-high case suits a crossrail location and uses bolt-only construction without a latch.

The faceplate measures 25 × 3 mm; check the faceplate recess, 64 mm case height and fixed backset separately.

Do not select a bolt-only version expecting the handle operation of a version with a latch; check extension rods and strikes against the parts list for this model.

Limitations

• The backset diagram only explains the measurement reference from the faceplate to the cylinder axis; it is not an outline, drilling or installation drawing.
• Check cylinders, extension rods, strikes and other accessories against the specific model; accessories listed in the catalogue as available on request are not standard equipment.
• Series certification or suitability does not establish that any complete door currently meets the corresponding grade.

Sources

Manufacturer documents are provided in their original language.

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