Cooling Room cooling - heat disposal?

Correct:
o centrifugal blowers = relatively low cfm but high static pressure

Of course, if your application has high static resistance, then
in comparison to axial you are still better off because their
airflow drops like a brick with static resistance.

The other thing of note is that blowers are generally noisier
for a given cfm than an axial fan. There aren't any "Panaflo L"
blowers out there - most are very very expensive except for
the PC-targetted Delta Gamma blowers for example.

The no-name blowers always grossly inflate their cfm figs.

So 38mm Axial fans are often used to help static pressure,
and used as a pair in push/pull that helps airflow along.