The two Toupret products (including the interior filler) I've used don't have fill depths. TBH Toupret, like Zinsser, is now one of those brands I just go to if they make something I need.
If that one doesn't do quite what you need have a look on their site for something that does.
Out of curiosity any particular reason to avoid foam? It's quite low effort. Albeit potentially messy.
The two Toupret products (including the interior filler) I've used don't have fill depths. TBH Toupret, like Zinsser, is now one of those brands I just go to if they make something I need.
If that one doesn't do quite what you need have a look on their site for something that does.
Out of curiosity any particular reason to avoid foam? It's quite low effort. Albeit potentially messy.