Designed to mount within the confines of most wake board towers to provide shade for the driver and spotter. These excellent Tower Bimini Tops measure 48'' long and approximately 16'' high(from mounting point). The frame is constructed from bright dip anodized aluminum tubing and incorporates high quality marine grade hardware, while the top is made with Ultima? fabric for the best performance in strength, UV stability and longevity. Choosing the correct size top: The Bimini Top mounts directly onto the tower frame at the center point, so pick the best position on the tower that will provide the best shade to the driver's seat. These low profile tops measure approximately 16'' high at the maximum, so be sure the position will keep the top high enough to clear the driver and spotter when seated. Measure across the tower at the mounting point that has been selected and choose the Bimini width that matches your measured width on the tower. Check the width at the top and be sure that the angle of your tower will accommodate that dimension.