Picture of three windows over a kitchen sink. One of the windows, a casement, is open.

A casement is a popular operational window style. 

There are many types of windows styles. One key differentiator to be aware of when deciding on a window is whether it is operational or not. Operational windows are windows that can open or close, either using a crank, like with a casement or awning window, or a sliding sash, like with a slider, single-hung, or double-hung window. Operational windows have the advantage of providing a room with ventilation. Non-operational windows, like picture, or fixed windows, are recommended for spaces where a view is desired but no ventilation is required.

FAQ Friday is a weekly feature where we answer Frequently Asked Questions about our products, service or industry. To see other FAQs we’ve answered, visit our FAQ page. If you have a question you don’t see an answer for, just ask in a comment or contact us.