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Technical illustration of a vertical PVC pipe air filter with zeolite granules, a mesh screen, and a 5V USB fan, showing airflow and dimensions.

Technical illustration of a vertical PVC pipe air filter with zeolite granules, a mesh screen, and a 5V USB fan, showing airflow and dimensions.
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vertical PVC pipe approximately 12 cm in diameter and 25 cm in height. The pipe stands upright with mesh screens at the top and bottom to hold zeolite granules inside. The inner chamber is filled with grayish zeolite granules covering about 70% of the internal volume. At the bottom end of the pipe, there is a small USB fan installed to push air upward through the zeolite media. Arrows indicate airflow: dirty air enters from the bottom, passes through the zeolite filter, and exits from the top as clean air. Parts are labeled: 'PVC pipe', 'Zeolite granules', 'Mesh screen', 'Filtered air out', and '5V fan (USB powered)'. See more

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