14-21 Tundra Crewmax V2 measurement?

Looking for the rear (tailgate down) opening height from truck bed floor to GFC rear door frame with GFC rear door open?
Trying to see what exactly the total height is and what I can fit through the opening. Does anyone happen to have this? Just doing some preliminary research before committing to a purchase. I currently have an A.R.E CX HD shell and the internal frame limits my choices. I also have a decked system in there, but literally cannot fit a wheelbarrow in it. Thanks!

Guess it would depend on the truck for my Tundra 2021 Crew Max 5.5 V2 Camper its 44’’ high by 54" wide

exactly what i was looking for. thank you.