oGeee Carbon Pre-filter Replacement for Honeywell Purifier Model HPA09X and HPA10X Series Perfectly fitted for Honeywell Model HPA09X and HPA10X Series. No need to make any further cutting, it saves your effort and avoid messy jobs Help to capture certain airborne germs, remove unpleasant odors and allergies. It has the ability to filter off a room size of around 155 sq.ft. The product is made up of nature material, high density coconut shell activated carbon which has the ability to trap up harmful substances and give me a clean and fresh environment.