ADRIAN-AIR® AXV Hot air condensing door curtain unit ADRIAN-AIR® AXV 45 - hot air blowing within seconds after the start up - high efficiency of combustion from 98% to 108% - great air flow guarantees effective air barrier for the surface of the door opening - precise air throw with significant speed and reach blocks the cold outside air from entering inside - significant additional energy savings on compensating heat losses with existing heating system - compact unit, easy to install - possibility to create self supporting vertical door curtain made of 3 units - option to run it with or without...