Union Carbide CO2 Tunnel. Model: CFF-4835. S/N: 218. Stainless steel. (15) Reliance Electric Motors, � hp, 1725 rpm, 230/460 V, 2.2/1.1 amps, 60 Hz, 3 phase. CO2 injection system. Pipe dia.: 1 in. with 5-1/2 in. of insulation. Stainless steel belt dimensions: 25 ft. 41 in. L x 48 in. W. Clearance inlet: 48 in. W x 4 in. H. Distance from fan to belt: 7-1/2 in. H. (4) doors. Control panel with (2) temperature gauges from -100�F to 100�F. Switches: circulation fan, zone, Hand/Auto, exhaust fans, zone 2, Hand/Auto. Switch for stop emergency. Overall dimensions: 33 ft. 16 in. L x 65 in. W x 90 in. H.