Red, is where the mounting bracket is. It juts out from the hull this much across the entire tanks side until the very last plate.
After the space the mount occupies, there is an airgap, as shown in this photo in Yellow. We can see the metal plate does not directly touch the mount. There’s a 40mm airgap.
After the airgap, the steel plate is connected (blue) and is 40mm.
The shroud (Yellow) extends from it’s 40mm tip to 80mm and runs along the top of the armor array. It is just on the top. Not occupying any space, just stopping debris falling in.
The middle plates, we’ve seen are thicker. 80mm (twice the thickness of the steel plate at the front) and now directly mounts to the mounting brackets instead of an airgap existing.
This way, the profile of the front plate is flush with the middle plates, but where the front has a 40mm airgap inside, the middle plates are a full 80mm plate and do not have this airgap.
We can see the middle bit is thicker in every photo.
We know ASPRO-HMT has to be mounted on a solid plate, flush, so the outside of the panels are where the metal is on TES.
We can see the shroud doesn’t extend down the side of the middle plates, and the plates are solid.
The front has a 40mm air gap and then a 40mm plate, total space occupied is 80mm.
The middle therefore, is 80mm since the solid metal is facing outwards, and we can see there’s no airgap, occupying the full 80mm space.
So…middle 2 plates = 80mm thick
front plate = 40mm airgap and 40mm plate
Now @DevilO6 my question is what are these boxes on the turret cheeks?
Also, what is the vehicle behind the challenger, at first glance I thought it was a warrior but I’m unsure.