
THIRARD 789 Mortise Lock - Cylinder Door Mechanism
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Return possible until 24 April 2026
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Safety Mechanism
This mortise lock features an ejectable latch bolt with an emergency function. The half-turn is reversible without disassembling the case, facilitating installation and adaptation to existing configurations.
Dimensions & Compatibility
Standard configuration with a 50 mm backset and a 70 mm or 85 mm center-to-center distance. The transmission square measures 8 mm. This model ensures direct compatibility with reference S31B-C70.
Materials & Finishes
The faceplate is made of stainless steel and the latch bolt in SUS304 stainless steel for optimal corrosion resistance. The case benefits from a zinc surface treatment. Two faceplate options are available: rounded ends (RE) or square ends (SE).
| Backset | 50 mm |
| Center-to-Center | 70 mm or 85 mm |
| Square | 8 mm |
| Faceplate Material | Stainless Steel |
| Latch Bolt Material | SUS304 Stainless Steel |
| Case Finish | Zinc Plated |
| Faceplate Options | Rounded Ends (RE) or Square Ends (SE) |
- SKU
- CFG93458
- Category
- Storage & Organization