Awning windows are hinged at the top and open outward. Usually wider than they are tall, their entire sash opens to provide full side-to-side ventilation.. It is similar to a hopper window, except that hopper windows open by swinging inward.
They feature a scissor-style hardware arm. This allows for a quick-disconnect clip so the window can be opened to a full 90-degrees. This allows for both easy cleaning and full room ventilation.
Awning windows provide some protection from the rain, even when wide open. Awning windows can be combined with casement windows and picture windows to create dramatic sight lines and combination windows.