bought a used inline fan off a guy locally, 6". he said he used it for the last 2 years continuously on the side it says a product number, google came up with nothing.. on the side it says 120v 60h 45w 1900r/pm 0.37a he told me it was 440 cfm, which it obviously isnt. anywhere to find out the actual cfm? my room isnt even sealed yet, and barely a faint smell, so i dont need it atm, but wanted to help bring temps down. help?