FL601 Window Handle for Tilt & Turn Windows, made by zinc alloy, which accquired the ISO certificate ... : PHOTOS FOR FL603TWO: CHARACTERISTICFL603 aluminum window handle was designed for Tilt & Turn Windows, made by zinc alloy, which accquired the ISO certificate ... handle. It's widely used in aluminum casement windows, aluminum tilt and turn windows, all for the window handle part. It's ...