What is the difference between a casement and a awning window?

A casement window is hinged on the side and opens outward with a crank, while an awning window is hinged on the top and opens outward with a crank. The main difference between the two is the direction the window opens. A casement window opens horizontally, while an awning window opens vertically. Casement windows typically have better airflow because they can be fully opened, but awning windows can also provide good ventilation while keeping out rain.

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