Roto H500 MVD500 genuine gearbox with a double spindle and a 35mm or 45mm backset

Operation: Lift lever or double spindle

Latch reversal: Undo the screw in the latch to remove. Reverse and reinsert then replace the screw.

1. On closing the door, the latch is automatically engaged.

2. Lift the handle up to engage the additional locking points.

3. Throw the deadbolt and lock the system by turning the key (on some brands, the deadbolt will be thrown by lifting the handle).

To unlock the door

1. Unlock the system by turning the key.

2. Push the handle downwards to disengage the locking points.

3. A further quarter turn of the key will retract the latch.