Package includes: 4 True HEPA Filters + 8 Carbon Booster Pre-Filters. Designed to fit aer1 ready air A Filter D Filter K Filter. Compare to Holmes aer1 -type total air filter HAPF30AT
Compatible with UNITS：BAP260, BAP815, BAP825, BAP9200, BAP9700, BAP520, BAP 9417, BAP9427, BAP9435 Package may vary
CARBON BOOSTER PRE-FILTER Absorbs household odor from pets, cooking and smoking. And traps larger air contaminants like hair and lint. The carbon component in our product is made from FSC-certified charcoal powder

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