Martin/Baron CO2 Stainless Steel Tunnel. Model MBI 1-38-0028-01. S/N: J990202. 304 stainless steel tunnel is composed of two sections and features a 1 in. chain link belt made of 304 stainless steel. Maximum product clearance/aperture above belt: 40 in. W x 5-1/2 in. H. Tunnel has (9) 19-1/2 in. dia. fans. Electrical requirements: 460 V, 40 amps, 60 Hz, 3-phase. (10) 1 hp Baldor motors, 1,725 rpm, 208-230/460, 3.5-3.2/1.6 amps, 60 Hz. Overall dimensions: 372 in. L x 56 in. W x 50-1/2 in. H.