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 10 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 10 years ago
This material (in several layers) may work