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Box Fan Air Filter Adapter for Wildfire Smoke, hero tilt

Box Fan Air Filter Adapter for Wildfire Smoke

The small part that fixes the whole thing.

4.9k downloads in the maker community

$7.99

Color: Gray

Printed in the USA when you order.

  • Made in the USA, printed when you order
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  • Turns a 20 inch box fan into an air filter for the home
  • Pairs with a standard furnace filter you already own
  • Saves hundreds vs buying a true HEPA unit
  • Brings cleaner air to homes during wildfire smoke

Build a real air filter from a box fan. This adapter clips a standard furnace filter onto a 20 inch box fan, so the cheap blower you already own pulls smoke and dust out of the air. A practical fix during wildfire season or hard renovation days.

The clips hold the filter against the fan intake without tape. Slide a fresh filter in, swap when it gets gray, repeat. Pair with a true HEPA filter for the best results, or use a cheaper merv-rated filter for general dust control.

Built for households dealing with smoke, allergies, or seasonal dust. The kind of fix that turns a scary news cycle into a manageable week.

Will it fit? Check the numbers.

Size
35 × 142 × 30 mmabout the size of a water bottle
Material
PLA, solid color
Made
In the USA, printed when you order

Sizes come from the real model file, not a guess.

Want a different size? Have your own design?

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$7.99

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