Window Types
Hollie Deese2017-10-27T07:52:32-07:00Double Hung In a double hung window, both the upper and lower sash move. Look for the sashes that tilt in for easy cleaning. Ventilation is limited to half the area of the window. What to watch out for - The windows slide on metal or plastic tracks which make double hung windows only half as air-tight as casement windows.