5000 vinyl casement windows are hinged on the left or right side, while awnings are hinged on the top. Both windows open 90° using a crank handle, allowing for maximum ventilation and an unobstructed view, and are constructed of energy efficient and easy-to-maintain vinyl. They can be combined, mulled and stacked with fixed casement picture windows. Configurations include singles, stationary and factory mulled twins and triples.