HEPA + PreFilter for Holmes HAPF600 Allergen Replacement B — Replacement HEPAgrade filter with integrated prefilter designed for Holmes air purifiers. Replaces original HAPF600 replacement filter and fits a wide range of Holmes models. Key benefits Reduces airborne irritants: The HEPAgrade layer works with the prefilter to trap common household particles such as dust, pollen, pet dander and other allergens you want removed from indoor air. Protects the purifier and extends life: The prefilter captures larger particles and helps prevent premature clogging of the HEPA media, maintaining airflow and performance. Simple replacement: Designed as a directfit replacement to restore your purifier's filtration performance without modification. Product highlights and attributes Filtration type: HEPAgrade main filter combined with a prefilter layer. Functionality: Captures both larger debris (prefilter) and fine particulates (HEPAgrade media) to improve indoor air quality. Compatibility: Direct replacement for Holmes HAPF600 Allergen Replacement B and compatible with the following Holmes models: HAPF600D, HAPF6, HAP8650BU, HAP759TU, HAP9726BU, HAP9726U, HAP726U, HAP756U, HAP633U, HAP616BTU, HAP616TU0CS. Fit and installation: Designed to match the original filter dimensions and mounting points used in the listed Holmes models for straightforward installation. Material: Multilayer filter media consisting of a prefilter layer plus HEPAgrade media. Performance and care Restores intended filtration: Replacing an aged or clogged filter with this HEPA + prefilter helps the purifier to its designed performance for removing household particulates. Maintenance note: the filter according to the air purifier manufacturer's recommendations or when airflow or cleaning performance decreases. Follow the Holmes unit manual for safe replacement and disposal instructions. Use cases Allergy relief in the bedroom: Install in a compatible Holmes bedroom air purifier to reduce pollen, dust and pet dander overnight and support easier breathing. Petfriendly living areas: Use in living rooms or dens to capture pet hair and dander before particles circulate through the home. Home office or study: Improve indoor air quality where you work or study to reduce dust and airborne irritants that can affect concentration. Compatibility checklist Compatible with Holmes models: HAPF600D, HAPF6, HAP8650BU, HAP759TU, HAP9726BU, HAP9726U, HAP726U, HAP756U, HAP633U, HAP616BTU, HAP616TU0CS, and as a replacement for the Holmes HAPF600 Allergen Replacement B. Installation tips Power off and unplug the air purifier before replacing the filter. Remove the old filter and insert the HEPA + prefilter with the same orientation as the original. Ensure a secure seal and proper seating to maintain airflow through the filter media. This HEPA + prefilter is intended to match the original Holmes filter specifications and restore the intended allergencapturing performance of compatible Holmes air purifiers. as needed following the purifier manufacturer's guidelines.