Wanted to share my design if you are looking for a rack combination. I used a Front Runner rack and adjusted the slats to accommodate the Maxxair then added 4 100w Renogy panels, (one of the narrowest dimensions I could find to fit beside the fan) The extra slats that were moved for the fan created a deck area in the rear. The T-slot design allows for unlimited accessories/attachments.Thanks for the idea of splitting the panels to keep the profile to the roof low - I had not considered that. I want a roof rack anyway and plan to build my rack so it is very low profile so I'll go with a single 400 watt panel and mount it very close to the roof.