Why don't you use this instead of the PVC
to keep the FILTER assembly in place?
The Big Bang Theory Season 2, Episode 22
Fine, it has
a charcoal FILTER in it.
The Big Bang Theory Season 11, Episode 12
through the cryocooler
or through the vacuum FILTER.
The Big Bang Theory Season 10, Episode 20
I bought a FILTER.
Breaking Bad Season 2, Episode 10
Uh, I need a new dust FILTER
Breaking Bad Season 5, Episode 11