the exact dimensions are 64"x39"x6" I went with a cheaper amazon one Leader Accessories. Used black silicone and some rust oleum bed lining paint to prevent rust.
It's basically like this: https://www.amazon.com/dp/B07DK4J1CC/ref=cm_sw_r_cp_apa_fabc_FJr8Fb87RN732
I just removed the bolts from the top and tightened the hose clamps and it took the form of the roof. Then sunk self tappered screws in to lock it in place. I also ended up with 8 hose clamps on each side, and they rate at 1100lbs of tensile strength each.
Don’t have one personally but have had my eyes on this one
I ended up buying this one and I know it’s it constructed as well as the Yakima but so far has met my needs for three camping trips and some paddleboarding adventures.
It’s 64” long and that is just enough so I can still get sunroof and lift gate open.
I’ll check out the Yakima when I wear this one out.
Leader Accessories Roof Rack Cargo Basket with 150LB Capacity Car Top Luggage Carrier 64"x 39"x 6" Fit for SUV Truck Cars https://smile.amazon.com/dp/B07DK4J1CC/ref=cm_sw_r_cp_api_glt_fabc_C32Y3CX4F8CZFM6P0W3R?_encoding=UTF8&psc=1
So I got the roof rack from the previous owner when I got the jeep, pretty sure it's this one. I cleaned it up and hit it with some rattle can bedliner because it had some rust, but didn't have enough on hand to do the extension so I'm running it short right now. Yeah it mounts right to the OEM crossbars.
It’s a cheap universal one from Amazon: https://www.amazon.com/dp/B07DK4J1CC Was $150 when I got it and works well enough for the price.
Roof rack came from Amazon: https://www.amazon.com/dp/B07DK4J1CC?ref=ppx_pop_mob_ap_share
cant find the bars right now, bought them about a year ago.