7aluminum 6061-t6; 10.250 in. High, 4.250 in. Wide 86.590 in. Lg; 4 mtg tabs 0.260 in. Diameter hole with 0.320 in. Slot to holes; 12 mtg holes on side, 8 end holes 5.628 in. Center to center 1.063 in. Dia, 4 holes 0.531 in. Dia, 13.000 in. Center to center