Honeywell Activated Charcoal Filters

These activated charcoal after filters contain 30 to 90 grams of charcoal per square foot of filter media. 1/2" and smaller have 30 grams of activated charcoal per square foot of filter media and 1" have 90 grams of activated charcoal per square foot of filter media. All electronic air cleaners should have activated charcoal after filters for maximum VOC (volatile organic compounds) control.