Pace-Edwards Jackrabbit retractable tonno.
B&W Companion RVK3600
2016 Ram 3500
The tonno closes with about one inch to spare above the hitch.
One feature I like is the ability to close the tonno part way (3' covered, 5' open) when towing. That keeps things in the forward part of the truck bed dry and in shade.
Chris and Pat
2023 Ram 3500 Limited, Cummins, Aisin, dually, Auto Flex Rear Air Ride Suspension
2022 Grand Design Reflection 303RLS
2024 Winnebago Minnie 2327TB