Bring the fresh air indoors. This single 13.5" arm casement operator features die cast construction and comes finished in baked coppertone enamel. It features a steel arm and nylon roller allowing windows to open up to 90-degrees and can be quickly disconnected from the sash. Package contains 1 operator and 1 handle for left hand as determined by the side the hinge is on, when viewed from the outside. For replacement track use EP-22397.