Product review (1 stars): This blower should not be used as a Dyer Booster!
Do not buy this fan as a  dryer booster. After burning two of them out, I just found out from the manufacturer that they are not intended for this use (even though the Amazon description says otherwise). The proper unit is a Model LB-2. Im not optimistic about getting a refund. The generous 30 day Warrentee is up! :-(

Update: Amazon Customer Service did allow me to return the second unit for a full refund. Thank you. FYI, if you buy direct or from an official dealer, you get a 5 year warrantee.