Yale Lockmaster 28mm Bifold Door Lock – 24mm U-Rail
Yale Lockmaster 28mm Bifold Door Lock
A Yale multipoint lock for compatible aluminium bifold traffic doors, with a slim 28mm nominal backset and 24mm U-channel faceplate. Choose the exact model and match the existing lock before ordering.
Choose your model
- Short – YBF00828: the existing short-layout option.
- Long – YBF00928: the Yale long configuration, also called “standard” in Window Ware’s ordering table. The new technical diagrams are specifically for this option.
The two models have different upper-hook positions. A matching backset or overall rail length alone does not establish compatibility.
Key features
- Lever/lever operation with 92mm PZ centres.
- Two locking hooks with anti-lift pins, a central deadbolt and a reversible latch.
- 24mm U-channel rail for compatible AluK aluminium bifold profiles.
- Supplied as one lock assembly.
YBF00928 technical measurements
| Measurement | Specification |
|---|---|
| Overall faceplate length | 2200mm |
| Faceplate width | 24mm U-channel |
| Backset | 28mm nominal; 27.5mm on the Yale drawing |
| PZ centres | 92mm, spindle centre to cylinder centre |
| Centre-case depth | 45mm |
| Upper-hook reference height | 1780mm from the bottom of the faceplate, as marked in the technical guide |
| Lower-hook reference height | 418mm from the same bottom reference |
Check before ordering
Compare the faceplate profile, centre case, hook positions and fixing layout with your existing lock. The technical images show YBF00928 only and are not a drilling template. Measure the original lock and select the matching code; these models are not interchangeable solely because both have a 28mm backset.
Handles, euro cylinder, keeps and shootbolt extensions are separate items unless expressly stated. Suitable installation and adjustment are essential. If you need help identifying your lock, send us clear photographs and measurements.
