as a former weed grower I have many fans to vent with, and the Can Fan max line is my favorite, quite and efficient, and high powered. they are turbine fans, not centrifugal fans, and they are crazy powerful.
Primary: Eds Aplfelwine 1/19/12, Twin peaks DIPA 1/10/12, BJK 2 hour IPA 12/9/11
Secondary: Hoppys 420 IPA (infected) 10/20/11, Colorado Wildflower Cyser (infected) 10/21/11
Bottled or Kegged: Over Inflated Rubber Thingy 1/20/11, Fiddle Barn Stout medium american oaked bourbon, 7/20/11, Pumpkin porter 12/17/11, KIPA: Oaked IIPA, ~1/2/2011 (started ~10/2/11), 1/27/12 6% abv sort of Hoegarden clone,