The Soffit Vent is a revolutionary invention that solves a long-standing problem for venting a bathroom exhaust fan to the exterior as regulated by the Building Code. The ONLY solution is to vent the moist air that is extracted by the exhaust fan, outside the passive airflow of the soffit instead of into the soffit. The main goal of Moisture Flow ® is to educate people about the effects of mold and moisture damage in attics and provide a permanent solution to the remediation and removal of mold.