A well designed casement window will seal tightly when it is closed and locked minimizing air leakage. Casements are hinged on either the left or right side of the sash. Single point or multipoint locks can be used to secure the sash to the frame. Manual or power operation may be used to open and close the sash. AmesburyTruth provides a variety of extrusions and weather-strip solutions to optimize your casement design.