The Solid 3"x7" roll down shade hangers are for header beams on the Alumawood flat pan non-insulated covers. They are designed to hang a 2x4 wood stud so that you can screw the brackets on the rolled down shade to the stud and not the patio, eliminating damage to the cover by putting holes in it. Great for Coolaroo shades, mounting TV's and multi product decorating. Good for up to 25 lbs.