Roto H650 gearboxes are dimensionally the same as the H600 series but feature internal upgrades. They are available in a 25mm, 28mm, 35mm, 40mm, 45mm, 50mm, 55mm, and 65mm backset with single spindle operation.

The H650 gearbox measures 212mm high by the backset + 15mm. The latch is 29mm high, the deadbolt is 30mm high and there is 58mm between the bottom of the latch and the top of the deadbolt. Gearboxes are fitted to faceplates with three screws. The top to middle screw measures 70mm, whereas the middle to bottom screw measures 125mm.

Roto H650 multipoint door lock gearboxes feature a "whisper latch" as standard fitment. This latch has a central plastic component to ensure that the door closes quietly. It's worth noting that Roto did supply these locks with other types of latch, which although rare, may not feature the plastic insert.

European markets feature locks with 25mm up to 80mm backsets, but locks with 35mm and 45mm are sold in the UK. When measuring the backset, allow 2-3mm for the faceplate, so a 35mm backset gearbox will measure 32mm when not fixed to the strip.

We stock a range of associated products for Roto H650 gearboxes, including multipoint door locks, keeps, spindles, handles and accessories.

Operation: Lift lever

Latch reversal: Locate the small hole above the latch and insert a 2mm Allen key which should go down at a slight angle, push down on the Allen key and at the same time pull the latch out, reverse the latch, and reinsert, push the latch right in and test to ensure it is connected properly.

To lock the door

1. Lift the handle upwards to engage the locking points.

2. Lock the locking points and main deadbolt (if present) by turning the key.

To unlock the door

1. Unlock the system by turning the key.

2. Push the handle downwards to disengage the locking points and retract the latch.