Posted by a reviewer on Amazon

Pros very powerful durable inexpensivecons one speed full speed when plugged in and off when unplugged noisy cover does not last longnote i use the phc enterprise sc3m variac variable transformer 300 vac max 0130v output 3 amp rather than the ventech controller that is made for this fan

Posted by a reviewer on Amazon

It did cost me an extra 10 to add it later

Posted by a reviewer on Amazon

I have another inline fan blowing positive cool air into the tent as well

Posted by a reviewer on Amazon

When its too hot i just dim my ballast to 400w and lower the hood and its never a problem

Posted by a reviewer on Amazon

Its very quiet in fact were probably going to order even larger more powerful ones for the other bathrooms and do away with those noisy weak ceilingmounted fans

Posted by a reviewer on Amazon

It only has about two hours of use

Posted by a reviewer on Amazon

I bought this for an unusual case to cool a projector through some duct and redirect heat away from people

Posted by a reviewer on Amazon

That was a waste of money as it didnt cool enough and once when the indoor heater was on the adhesive holding the duct to the projector feel off