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Why are comments turned off on your cabin air filter video? You admitted you weren't sure so why not turn the comments on so someone who is sure could let us know if you were right or not. You can't assume that your old cabin air filter was put in correctly and simply copy it. Air flow is NOT going up. Air flow is down. If you put the filter in with the air flow arrow pointing up then it's upside down. The ONLY time an arrow on a cabin air filter should point up is if it says "up" next to the arrow. All horizontally mounted cabin air filters with the blower motor mounted below the filter have downward air flow. Otherwise the blower motor would be full of dirt and debris. If it doesn't say up next to the arrow then the arrow indicates air flow direction and should point down. Another simple way to determine this is noticing how the dirt accumulates on top of the old filter which proves that dirty unfiltered air enters the topside of the filter and flows downward. Still not sure? Then remove the filter and turn on the blower. Then put your hand where the filter goes. Does it feel like it's blowing upward? Use a piece of string or tissue paper. They will be sucked downward. If the Subaru parts say up on them then they have nothing to do with air flow. They are simply telling us which side goes up. So if your filter says "up" next to the arrow then of course it should point up. If it doesn't say anything next to the arrow (like on a WIX branded filter) then by default an arrow on an air filter indicates air flow direction. I've already emailed WIX to confirm this to be true.