This 12 inch heavy-duty fixed rod and shelf bracket is for use with closet rods with diameters of up to 1-3/8 inch and has a hook depth of 2-1/2 inch. It is intended for use with 11 to 14 inch deep shelves and has a shelf platform of 11 inch deep. A pair of these brackets will hold up to 500 lbs. when properly installed. Install on 16 inch stud centers for maximum support.