I don't recommend installing two fans in series. It is best remove the existing fan and install a inline centrifugal fan with some ductwork.
I'm assuming you are only using this to remove heat. If you are using this in a garage setting where a high level of combustable fumes are be exhausted...
Dear brownrc;
I'm an HVAC prefessional engineer. I do not recommend attaching ductwork to the fans you listed above. These fans are designed to operate without any ductwork and do not have enough power to pull air through a ductwork system. I afraid if do attach ductwork to these fans, you...
