Ventilation system for crawl space between bottom joist and ground surface

摘要

The system ventilates a space peripherally limited by a foundation wall (1). The space is sealed against non-regulated air throughflow, and a distributing input air component (4) is arranged along one side of the space. An output air unit (5) is arranged on the side or opposite side of the crawl space. Air from the input air component is made to flow towards an opposite side of the crawl space The whole bottom joist surface is passed by flowing air. The input air component incorporates an elongated spreader unit (9) provided with one or more air openings and the output air unit includes an elongated collecting unit (11) provided with one or more air apertures.