Four square meters of truck mirrors are used to direct sunlight to the bottom of the grill. Sixty seven West Coast truck mirrors are mounted into four frames. 1 3/4 inch square tubing that has 1/2 inch holes spaced one inch apart are used to hold the mirrors. The square tubing is 15 feet (4.5 meters) in length. To prepare each mirror for the frame, take off the hardware that comes with the mirrors. Leave a nut on one end of each mirror. Find about 3 feet of 1/4 inch, 50 psi rubber hose used for fuel lines in automobiles. Cut 1/4 inch segments out of the rubber hose and put one on each end of each mirror. The threaded rod on the mirrors will go though the holes on the square tubing. The rubber hose segments will not. The mirrors can be rotated for aiming and the friction from the rubber wil