BAJASVT
FRF Addict
The photos that gDMJoe posted are useless for a Raptor or any other 2009+ F-150. The first filters shown are the filters on the bottom of the heated AND air conditioned seats... it's the filter for the seat's air intake. The second set of photos are fabricated cabin filters on an old Crown Victoria.
The 2009+ cabin intake is inside the wiper cowl cavity behind the PCM. I took photos of the actual intake a few months ago from a truck that had it's PCM removed. The intake opening is extremely irregularly shaped and has an uneven contour surface. It wouldn't be impossible to fabricate a filter for our trucks, but it would be fairly difficult due to the location it'd need to be installed and accessing it for any sort of regular maintenance would be a nightmare.
My suggestion is to forget about this idea.
The 2009+ cabin intake is inside the wiper cowl cavity behind the PCM. I took photos of the actual intake a few months ago from a truck that had it's PCM removed. The intake opening is extremely irregularly shaped and has an uneven contour surface. It wouldn't be impossible to fabricate a filter for our trucks, but it would be fairly difficult due to the location it'd need to be installed and accessing it for any sort of regular maintenance would be a nightmare.
My suggestion is to forget about this idea.