Which side is the drive side? It is a very good question. Usually the manufacturer puts an arrow on the housing for the direction. If you look inside the housing, you will see a longer slot which is the inlet and a shorter slot which is the exhaust. These slots are closer to each other on one side. On the closer side point an arrow from shorter to longer slot and that is the direction of rotation.
Hi Michael, it will definitely depend on your location but you can also purchase it online of course with a reliable platform. In Rwanda, we can't get it locally so we import from Dubai or South Africa. Where are you located?