Off the top of my head, it is around 6'x4'. The rack is a Thule Xsporter Rack, you are correct it allows me to raise and lower the tent. I can lower it down to fit it in the garage and then raise it up to slide my kayak between the tent and trailer. Additionally, I found I can use the rack to get the tent leveled instead of having to try to level the trailer itself. Great rack, worth the money.What size trailer is that and what rack setup are you using? It looks like it’s tracks that allow you to raise and lower the tent.