Industrial Tunnel Hardening Chamber comes in polyurethane panel made enclosure. The Tunnel Hardening Chamber is provided with single, small hinged, side swing type, left and Right hand opening, one service door. The Tunnel Hardening Chamber has the indoor unit drain that can be connected to the nearest drain point with necessary piping providing proper slope. The Industrial Tunnel Hardening Chamber find application in ice cream plant and in pharmaceuticals gel packs.