Whirlpool 8171510KS Genuine Charcoal Pre-Filter - Whishield Anti-Microbial Activated Replacement Fit for Air Purifier WP1000, WPPRO2000, Extra Large 4 Pack

PACKAGE INCLUDES: 4 Pre-filters (One full years supply) - Whirlpool Whishield Genuine Anti-Microbial Activated Charcoal Replacement Pre-Filter, Extra Large 8171510-KS: 17.87 x 17.68 inch | FIT MODELS: Whirlpool Whispure Air Purifier WP1000, WPPRO2000 series | FILTRATION: 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. | MORE EFFECTIVE: Pre-filters Whishield Anti-microbial layer helps HEPA filter lasts longer and freshens the air. Inhibits the outgrowth of micro-organisms in the filter. | DURATION: Replace the Pre-Filter every 3 months