Air Purifier for 120mm fan

I originally designed this air purifier for laser engraving indoors during winter, when opening a window to vent fumes wasn’t an option.This 3D-printed housing turns a standard 120 mm AC Infinity fan and 120 mm HEPA filter into a compact, efficient filtration system. It’s ideal for small enclosures, desktops, or workspaces where you need cleaner air — especially around 3D printers, laser engravers, or resin stations.The enclosure features a tight-fitting snap-lock lid that securely holds the HEP