The casement is hinged on the top and bottom and it opens like a door. This provides superior ventilation, easy cleaning from the interior and excellent energy savings. In fact the casement is the most energy efficient of all the ventilating style windows.
Casement windows are models of contemporary style and convenience. They feature one hinged sash that swings out, welcoming the breeze in. Most common in newer homes, casement windows are coveted for their clean, uncluttered views and effortless operation.