The Fantastic Fans we've always had open till they hit an obstruction, then the top quits. Fantastic Vent told me they are designed that way. They are like the slide controllers on the Newmars we had. They sense the extra load and shut off.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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