RS Cryo Equipment Inc. Ultra-Freeze cryogenic freeze tunnel. 3 pass liquid nitrogen freeze tunnel. 3.5 in. tall clearance. 1st pass 102 in. long x 32 in. wide x 52.5 in. tall infeed. 2nd pass 55 in. long x 32 in. wide. 3rd pass 75 in. long x 32 in. wide x 44 in. tall discharge. Dual Leeson drives for conveyor belt. (2) SS fans inside the tunnel. (2) fiberglass access doors on each side. 10 in. diameter exhaust. With control panel. On casters.