However, there may be an advatage when your not towing. If you read all the "stuff" the bed of your truck needs a cover if your going to equip it with airtabs. Otherwise the wind just goes into the bed unless you don't have a tail gate or have a louvered one. On the website there is a pick up with air tabs on his roof. It may or may not be worth the extra bucks.
I'm still concerned about them being on the RV roof.
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