Our tunnels provided with banners have high retraction efficiency, articulated to reduce energy consumption. Official Distribution Certificate Main features Tunnel Zinged conveyor tunnel driven by side chains, speed adjustable with inverter. Air recycling controlled by the tunnel electric thermoregulator. Double retractable chamber made of steel sheet, studied for a positive thermal release of heat candles (incorporated into the tube and equipped with wings) and for a high air flow recyculation, to minimize heat loss. Adjustable air flow rate with adapted flaps. Product cooling fan. Optional tunnel Film compression rolls on the exit of the tunnel. Straight or curved discharge pan of different sizes. Tunnel conveyor extended at exit.