The QUICKSILVER 3X4 Adjustable Wide-Body channel with its patented four settings is our most durable model. It has 40 degree diagonally angled ends (and 90° ends on 10″ and shorter sizes) which prevent the tip of the alloy from coming into contact with the frame surrounding the window. It cleans closer to the frame leaving less water and reaches into the corners. It is perfectly suited for the S-technique. The squeegee rubber is secured with two exterior end clips. The adjustment slots or settings in the Sörbo 3X4 Adjustable squeegee channel allow you to reposition the rubber to the preferred firmness. For 36″ squeegee set rubber to 2nd adjustment.