mine blow towards the side with the plastic bars going across the side, kind of like a fan grill. best way to find out is to plug em in and fire up your machine really quick
Look at the fans. The side with the blades is the front, and brings air in from that side. The exhaust side is the side with the frame arms that keeps the motor connected to the whole frame.
it would blow towards you. if you looks close enough there is usually an arrow pointing where it blows on the frame, this fan might be different from the norm.