Extruded Aluminum frame, heavy duty, built to fit solar panels. Includes cross-braces and metal feet that can be screwed on to flat roof or sit on ground. Aluminum braces may be cut easily to obtain best angle for latitude and also to face due south on any roof angle or orientation. If both the header and footer of a solar tube panel are bolted into place on the roof, then when the wind blows hard or the earth shakes, there will be movement which could twist the tubes and cause breakage. With a frame that is free-floating on top of the roof surface, the header and footer are fixed relative to each other even as the roof flexes and the glass is safe.