Roof Rack, Ladder and Nerf Bars
They're made by Aluminess in Santee, California. They're awesome.
Our van is 4WD and the steps up are pretty high so we added nerf bars. They're not wide enough to use without also using a hand hold - like if you're carrying something in both hands - but we like the minimal footprint enough to deal with those rare instances.
Aluminess extended the kayak rollers to protect the van's back-up camera. They also built crossbars to precisely fit our solar panel.
We like the strong, perforated floor that allows us to walk anywhere up top. Makes a great sundeck and it's ideal to get certain photos!