This unique spoiler has a white acrylic exterior laminated to a fiberglass interior layer. The result is a beautiful smooth finish with exceptional strength. Mounting is by 3M high strength tape and screws.
This spoiler is highly recommended if the front of the hatch is exposed to high-speed oncoming air/water. If the hatch is mounted behind a solar panel or another windbreak, it would not be necessary. The spoiler reduces cabin wind noise.