The phrase "have a thickness" is correct and usable in written English.
For example, you could use it in a sentence like "The walls in the room have a thickness of two inches."
It must have a thickness, because we can go underground or underwater.
The apartment's walls have a thickness of 45 centimeters, or almost 18 inches.
It's the kind of air that seems to have a thickness to it, like the dense fug in an airport smokers' cubicle.
These bars, which have a thickness of a few micrometers, have doped regions that create p-n junctions, the main feature of most photovoltaic cells.
This means the film must have a thickness of only one, or a few, hundred nanometres (10-9 metre).
The fragments have a thickness varying from 1 4 μm.
Both interface have a thickness of about 1.1 nm.
The two porous silicon layers have a thickness of about 10 μm each.
All of the dielectric layers have a thickness of hh (100 nm).
The fins have a thickness of 4.5 mm and a length of 25 mm.
The films obtained have a thickness between 440 and 550 nm.
