Hi. I am pretty sure this has been asked many times but I am having a hard time determining used roof boxes or even new ones that will fit my 2016 CX-5 with OEM Rack and Cross bars. I recently got them put on my CX-5 and would like to grab a used or new box from any manufacturer that will fit my vehicle. We do not ski so its really all about fitting extra things when we go camping or to a cottage. Items would include some luggage cases, groceries, blankets ,pillows, etc. Any leads on what I should be looking for? Opening the hatch would be nice but not mandatory. Most of the boxes I have looked at online are 7 ft or so. From a budget standpoint I Can't buy another set of crossbars at this time and probably feel I am limited in my cargo box selections....

Any advice??

Thanks