In sakna hmanrua chhiarna service a thlawna pek theih a niVentilation performance chhiar dan
Ventilation system kal tlanga boruak kal zat chhiar
F - Sectional ang deuhin a awm. Rectangular emaw round emaw a ni thei.
D - Air duct diameter a ni.
X - A zau zawng chu rectangular duct a ni.
Y - A san zawng chu rectangular duct a ni.
E - Thli chakna, second khatah.
Programme neih theihna tur.
Ventilation duct kal tlanga boruak kal zat chhiar.
Author of the project: Dmitry Zhitov
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