Lock and fitting dimensions
| Specifications | Dimensions from model documentation |
|---|---|
| Backset | 50 mm |
| Case height | 93 mm |
| Faceplate width | 25 mm |
Check the backset, centre distance, faceplate and mounting points against the specific model drawing.
Browse related directorySpecifications
- Product series
- 57226
- Backset
- 50 mm
- Key system
- Double-bit key
- Body construction
- Double-bit-key bolt mortise lock with additional locking points
- Case height
- 93 mm
- Faceplate width
- 25 mm
- Case and faceplate finish
- Galvanized
- Bolt material
- Nickel-plated steel
- Bolt throw stages (original term Throws)
- 2
- Additional locking-point connection
- M8 Threaded bushings
Construction and dimensional compatibility
The fixed backset of 50 mm is measured horizontally from the door-edge faceplate to the key rotation axis; it is not the overall case depth. Case height 93 mm, faceplate width 25 mm, bolt-projection stages 2. Fitted with M8 threaded bushings for connecting additional locking points.
Double-bit-key construction differs from a euro-cylinder lock body; check the existing door's keyhole and operating components. Where extension-rod connections are provided, separately check the upper and lower rods and their corresponding strikes.
Also check the installation space inside the door leaf, strike position and plates on both sides. An identical fixed backset does not make different constructions directly interchangeable.
Limitations
- The parameter diagram explains only the measurement reference; it is not a product outline and must not be used for drilling or installation.
- Strikes, extension rods and other accessories offered on request in the catalogue are not standard equipment.
- Statements of lock-series suitability or certification are not promises of current compliance for any complete door configuration.
Sources
CISA 2026 English catalogue, PDF page 186 / printed page 182Manufacturer documents are provided in their original language.