Spec front air filter foam
Front side panels are covered (inside) with open cell foam (gray/black). Find a thin foam suitable for some dust protection, possibly removable for cleaning?
#2 Updated by Dan Shope about 6 years ago
This might be too dense, but is easy to cut and available at craft stores, etc. We shouldn't have too many thermal overheating issues, which was a concern during initial concept design, so dense may be suitable.
#3 Updated by Dan Shope about 6 years ago
This material (in several layers) may work