I have made a permanent manual tonneau That is a fraction of the cost and I believe more durable than what is offered by Rivian. I had my local metal shop make 5 panels with black 0.04 aluminum in the shape of channels. 4 10.5 x 0.5 x54.5 " OD channels and 1 10 5/8 x 0.5 x 54.5 " OD channel...