Originally Posted by
perrybucsdad
Okay, but they will decrease airflow after the dead animal.
Does it increase the static pressure because the air has nowhere to go?
Yes in varying amounts depending on all the different variables.
It increases the static pressure (between the air mover and the animal) because there is something causing resistance to air flow.
Air flows through ductwork basically the same way water flows through a garden hose. Go outside and experiment.
Use the biggest hammer you like, pounding a square peg into a round hole does not equal a proper fit.