Casement windows and doors are hinged at the side and opens either on the left or right side. These are fully
sealed, when closed and let abundant natural sunlight and fresh air inside your home when left open.
Hinged at the top of the window unit, the sash pane beneath swings outward from the bottom and can
be positioned so that it is fully opened or almost closed, as you prefer. Water can run off an angled sash
with ease, but they still allow air to move around without any danger of your home becoming wet.