I'll take a measure when I get home and I'll reply to your other post.Congrats!
So far, not many owners on this forum.
If you have a chance, I was asking in another thread about some cargo area measurements:
cargo measurement thread
I've not had luck seeing one in person yet, or I'd have measured it myself. The closet dealer has only gotten 2 in and they both sold before I got a chance to go to the dealer.
Other cargo systems beyond the Tellurides cabin include a range of roof cargo options, specific roof attachments for your recreational activity of choice and some tow hitch options. Back inside, we higher demand options to choose from like a cargo net, cargo organizer and cargo tray.