Extend the life of your HEPA filter and increase the quality of air in your home with this Pre-Filter by Whirlpool. Designed to work with Whirlpool Air Purifier models AP450 and AP510, this charcoal filter traps odors and pre-cleans air, before it reaches your HEPA filter. Change quarterly. Made in USA. 12Hx9Wx1-1/2D".
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