I saw this tip. Go to inside the unit. Take off the fan cover and look at the roof material that laps behind the fan area or any area that exposes the roof material. If the top of roof material is the same color as the bottom, it is TPO. If the top of the roof material is one color and the bottom is black, it is EDPM.
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2015 Flagstaff 26VFKS
TV - 2014 F150 Crew Cab 5.0L
WDH - 1,200 Equalizer
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