ADI – Air Flow Direction | Ball In the Wall Room Pressure Monitor …
ADI – Air Flow Direction | Ball In the Wall Room Pressure Monitor … WEBNEGATIVE BALL-IN-THE-WALL®. SHOWN ALARMED AS VIEWED FROM OUTSIDE OF NEGATIVE ROOM. Note pressure setpoint label (0.01 iwc) The BALL-IN-THE-WALL® … NEGATIVE BALL-IN-THE-WALL®. SHOWN ALARMED AS VIEWED FROM OUTSIDE OF NEGATIVE ROOM. Note pressure setpoint label (0.01 iwc) The BALL-IN-THE-WALL® …