Keep trapping large particles in air and filter off such as dust, fibers, lints, puff, smoke. - Keep your house (living environment) in fresh and clean all year round, block the odors and particles which cause odors, allergy and hay fever. Leave your living environment in a dust free status. - The product comes with a size which can be fitted perfectly to Honeywell Model HPA300. It is highly recommended to replace the pre-filter in every 3 months. The best period of performance depends entirely on the room air condition. Correct using the pre-filter can optimize your Filter Life. Disclaimer: We are not affiliated with Honeywell in any aspects. Our products are not Honeywell products.
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