Carbon-based filter with additional Whishield anti-microbial layer of purification. Pre - cleans the air and eliminates over 99.99% of germs and bacteria. Removes larger particles and common household odors including smoke, cooking odors and pet odors. Pre-filter’s Whishield Anti-microbial layer helps HEPA filter lasts longer and freshens the air. Inhibits the outgrowth of micro-organisms in the filter.
What's in the package: 4 Pre-filters - 1 full year’s supply.
Fits For: Whirlpool Whispure Air Purifier AP51030K, AP45030K, APR45130L and WP500 series
Duration: Replace the Pre-Filter every 3 months.