Material steel, stainless, ferromagnetic; core 14 lb/ft 3 power, 0.4 in. Cells; 1/4-20 mtg holes on 1.000 in. Ctrs, start 1.500 in. From edge; internal damping system; black formica edges; 5.000 in. W; 10.000 in. Lg; 12.000 in. Thk; 4 legs 22.000 in. Ht, w/vibration isolation mounts