Clarke-A-Matic Floor Scrubber. Model: TB-32A. S/N: 32A-23521. Unit uses (6) 330 amp, 6 V wet-cell batteries in series. Total voltage: 36 V. Inlets: infeed tank in front with screen for water and cleaning chemicals. Outlet: (1) 3-1/2 in. dia. port with cover (waste). Overall dimensions: 62 in. L x 36 in. W x 46 in. H.