<p>This architectural drawing is Section of ventilation with detailing. In this drawing there were size of ventilation is 80x15cm. Proper ventilation keeps the air fresh and healthy indoors. Like the lungs, homes need to be able to breathe to make sure that fresh air comes in and dirty air goes out. Air indoors can build up high levels of moisture, odors, gases, dust, and other air pollutants. For more details and information download the drawing file.</p>