Steel, painted olive drab, 11.000 in.O/a lg bottom at front, 12.000 o/a lg bottom at back, 7.125 in. Hgt bottom at front, 9.000 in. Deep at bottom, 6.625 in.O/a lg at top, 4.375 in. Hgt at top, 8.000 in.Lens dia, 2 mounting holes, 0.4375 in.Dia, 8 rim attaching holes, 0.1875 in.Dia