fan cover plate
thingiverse
Cover plates for a 40mm or 50mm diameter circular hole. I use it to provide air flow inside a DIY amplifier box. Sizes: -> gitter.stl: 60mm wide, 2mm thick for 40mm holes -> gitter-72.stl: 72mm wide, 2mm thick for 50mm holes Use the Openscad files for customizations.
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