<div>I am modelling a house with natulral ventilation ducts to extract air at a low rate and I wish to know what are the most suitable components to model ducts and typical roof extractors that could induce flow. Please see attached the proposed diagram </div>
<div>Thank You<br clear="all"><br>-- <br>Javier Carrasco Eade<br>Arquitecto - UBB<br></div>