Decide which wall in your garage you want to install the shelves on. Use a stud finder to locate studs in the wall. Mark the locations lightly with a pencil, then determine and mark where the top and bottom of each standard will be, keeping the desired distance of the shelves between the floor and ceiling in mind. Make sure the marks are vertically aligned.
Determine the distance you want between the standards. The distance depends on what you want to store. For storing heavy objects in a garage, it is best to install three standards that are spaced 30 to 32 inches from one another. Also, make sure the shelves do not overhang more than 6 inches from the sides.
Place the first standard over the stud and insert the pencil through the top screw hole to mark its location on the wall. Wear your safety glasses and earplugs to insert a screw with a drill through the top hole to hold the standard in place. Place the 4-foot level next to the standard and adjust the standard until it reads plumb. Mark the locations on the wall with a pencil and insert screws there to hold the standard firmly in place.
Attach the remaining standards over the marks on the wall the same way, ensuring they are plumb.
Place shelf brackets in the slots provided in each standard. Make sure each pair of brackets is at the same level. Gently tap each bracket with a hammer to secure it in place.
Slide each shelf over a set of brackets. Some brackets have a hole in their center or front that you can use to secure the wooden shelf. Insert 1-inch wood screws into the holes to attach them to the shelves securely.