the benefits ventilator (Roof Ventilator)
* drive hot air ventilation inside the building
- ventilation. Help to ventilation. Or a circulation of air
- thermal heat absorption floating out
.Education savings, no electricity, because natural ventilator energy (NATURAL)
- light weight, have both made of aluminum and stainless steel
* Easy installation. Once
- don't care
.
การแปล กรุณารอสักครู่..
![](//thimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)