4 mtg holes 0.155 min, 0.161 max dia, mask 0.400 diameter min top and bottom 4 places, 2 transistors, silicon w/clip leads, 6 fixed resistors, 2 leads, elec, 3capacitors, fixed, 4.690 in. O/a lg, 4.187 in. Spacing center to center @of mtg holes lengthwise, 2.000 in. Distance center to center of mtg holes short side, 2.620 in. O/a w