well ive used the same style, im a big fan of hydro farm gear, so i use there fans they work really well,just kinda noisy but not to bad on the price either.
you can see them at Hydrofarm - Grow Lights, Hydroponics and More! you cannot actually purchase anything from this site but its another site for you 2 look at and get a better idea of what you might be looking for in the future. they also have $50.00 fans that are probably a little more stable than the hd ones. same style and everything.also take a look at there squirrel cage fans they move a lot of cfm for little money...
disrupt86 Reviewed by disrupt86 on . Ventilation help Pic So, we are adding an exhaust system to the room, but unfortunately are living in a rental and want to inflict minimal damage to the house... So, the best idea we have come up with is drilling 4" straight through the floor to the basement. The house is shitty and the carpeting was not attached properly and the floor seems to hodge podged together. I have attached a drawing for what I am thinking. The grow room is 10'x10'x8'=800 cu ft. We are running 2 600w HPS in there and it has been Rating: 5