Zowombera
Mapangidwe a Novel;
PVC kutchinjiriza mkati;
Okonzeka ndi kuthamanga kwa static komanso phokoso lotsika la centrifugal fan, chotsitsa cha masika chimayikidwa pakati pa fani ndi casing;
Yokulirapo pakugwiritsa ntchito, imatha kugwiritsidwa ntchito ngati fani yamagetsi komanso yotulutsa mpweya komanso yokhala ndi makina ena olowera mpweya kuti ipititse patsogolo kuthamanga kwa mpweya.