Thus the blower 21 passes a blast of air through its outlet 23 and down through the central passageway C of variable length, depending upon the open or partially open positions of the closure; and then downward through the outlet nozzle 44 forming an air curtain over the open portion of the door, the length of the curtain to fill the wall Daewoo FR-091A depending upon the position of the closure. In that manner a source of air at a[…]
