"OKNA’s Casement Window cranks out smoothly for maximum ventilation as well as eﬀ ortless cleaning".
"The Casement Window oﬀers a streamlined look in a window which is practical in areas with obstructions. It cranks out smoothly for air circulation while protecting your home from the elements." (OKNA Casement Brochure).
To read more about the Casement see PDF brochure.