Quick delivery thanks. For those that don't know, these come in 2 sizes, 20mm and 22mm backset, measured from centre of handle hole to front of strike plate. The shoot bolts push-and-turn to connect (like a bayonet light bulb), with two possible height choices, so check which you are currently using if buying this as a replacement.
Iv given it 3 stars as iv only used it a couple of times - Seems very tinny with a light motor that seems to get hot very quickly - it does a good job but time will tell if it is up to the job - i suspect the motor will fail within a year !