BB mortise locks

• 72 mm interior apartment doors
• 78 mm WC - doors
• 92 mm front doors / apartment doors outside

Square spindel:

• square spindel 8 mm for room doors
• square spindel 9 mm for fire protection doors
• square spindel 10 mm for external doors

Forend width and length:

The forend is the front face of the mortise lock which is visible after installation in the door. The design of forend can be rounded or square.

Door alignment:

The DIN direction of the door alignment is also important for the selection of the lock. A distinction is made here between DIN right and DIN left.
If the door hinges are on the left-hand side when observer looks at the closed door, this is a door with a DIN left door, if the door hinges are on the right side, this is a DIN right door.