Fisher Scientific Maxima Vacuum Pump. Model: D8A. S/N: 1290397855. Marathon Electric Motor, 3/4 hp, 1725/1425 rpm, 13-5.5-6.5 amps, 60/50 Hz, single phase. Designed for use with lab equipment such as freeze dryers, vacuum ovens and centrifugal concentrators. Inlets: (1) 3/4 in. dia. sanitary fitting. Outlets: (1) 1/2 in. dia. sanitary fitting. Overall dimensions: 22 in. L x 8 in. W x 12 in. H.