Hakko Pre-Filter, Extended Life, For HJ3100

An activated carbon filter complements the HEPA filter. Activated carbon absorbs nearly all organic and inorganic vapors passing through the filter. Its capacity to remove vapors varies with the concentration of gas in the air, humidity, temperature, and the velocity of the gas passing through the carbon. Efficiency remains constant until the filter is depleted, meaning it has absorbed all the pollutants it can hold. Extended Life Pre-Filter

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