Features:

• Fits all Honeywell round air cleaners.
• Replace approximately every 3-month
• Helps reduce common household odors
• Helps the filter work better
• Traps more dirt than standard carbon filters

Editor Reviews:

Product Description:
Replacement Universal Carbon Prefilter

Rating : - good but limited
I'm happy with it, but understand that it is thin and on a weight basis, has very little carbon in it. So I wouldn't expect it to do much.