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CISA 56358 90 mm Backset Reversible latch and three-stage bolt Mortise lock (156358900)

CISA 156358900 is a 56358 series Door-crossrail mortise lock, fixed backset 90 mm, faceplate width 25 mm. The 64 mm-high case suits a crossrail location; the reversible latch adjusts within 11–17 mm.

CISA 156358900 — Official series illustration, not a photo of this exact size variant; consult model specifications.
Official series illustration, not a photo of this exact size variant; consult model specifications.Image source
CISA 156358900 Fixed backset 90 mm Original measurement guide
Our original diagram: backset 90 mm is the horizontal distance from the door-edge faceplate reference to the cylinder centre axis. It is not overall case depth or handle-to-cylinder centre distance; not to scale; not a product outline or installation drawing.

Lock and fitting dimensions

Dimensions from model documentation
SpecificationsDimensions from model documentation
Backset90 mm
Faceplate width25 mm
Faceplate thickness3 mm
Case height64 mm
Handle-to-cylinder centre distance67 mm
Spindle specification8 mm

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

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Specifications

Product series
56358
Backset
90 mm
Applicable door construction
Door crossrail
Body construction
Reversible latch and three-stage bolt
Faceplate width
25 mm
Faceplate thickness
3 mm
Case height
64 mm
Case material
Galvanized steel
Faceplate material
Nickel-plated steel
Bolt throw stages (original term Throws)
3
Cylinder fixing
Screw inside the lock body
Handle-to-cylinder centre distance
67 mm
Spindle specification
8 mm
Latch adjustment range
11–17 mm

Selecting construction and installation dimensions

This row of 56358 has a fixed backset of 90 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; the reversible latch adjusts within 11–17 mm.

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

The modular roller is an optional accessory for 56358, not standard equipment for every 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

CISA 2026 English catalogue, PDF page 184 / printed page 180

Manufacturer documents are provided in their original language.

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ZamokWiki · A source-backed reference library for locks

Manufacturer documents are provided in their original language.