Air Dam??
Definition: A front spoiler mounted beneath the bumper and shaped to reduce the airflow under the car. Air dams can increase the airflow to radiators, reduce aerodynamic drag, and/or reduce lift.
The underside of your van isn't very smooth. Less air under there is better.
At first glance, I would say leave the design alone or make it a little bigger..
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Cheers,
Rich
Current ride: 2014 RAV4 LE AWD (24 MPG)
Wife's Pizza Transporter
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