Casement windows feature a hinged sash that opens outward, typically using a crank or handle mechanism. They are known for their energy efficiency, as they create a tight seal when closed, reducing air infiltration and improving insulation.

Commercial casement windows are available in a variety of materials, including aluminum, vinyl, and wood. They can be customized to fit specific size and design requirements, and often come with options for glazing, hardware, and finishes.