Space-Saving Turbine System Spiral High Speed Door For Rapid Logistics Access Space-Saving Turbine System Spiral High Speed Door for Rapid Logistics Access A Space-Saving Turbine System Spiral High Speed Door is designed for logistics areas that need fast, frequent access without sacrificing space. The rigid panels coil into a compact spiral turbine, freeing headroom and side clearance while enabling rapid opening and closing cycles. Fast Cycles in a Compact Footprint Busy