Top of Pole Mount for (12) 60 Cell Solar Panels. Fits on (1) 6 in. Sch 40 or Sch 80 Pipe(s) (not included). This pole mount is built with 6 inch deep wide-flange beams and Standard duty tubes and pipes. ALUMINUM RAILS FOR MODULE MOUNTING NOT INCLUDED! You will need to source (6) Heavy Duty Rails that are approx. 168 in. long, 18 Mid Clamps, and 12 End Clamps to attach the solar panels to the structure. You will also need 3 grounding lugs compatible with the rail you choose to ground the array as per NEC/UL requirements.