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  • $90.00

    4" Purolator MERV 8 High-Capacity Pleated Filter for Filter Grilles

    (For 14"x14"x4" return air filter grilles ONLY - NOT for Media Air Cleaners. Can ONLY be used on 14"x14"x4" filter grilles.) (We recommend a 4" filter change at least 2 times per year - September & March. For DIRTY environments or most efficient filtration, you may need to change filters...
  • $90.00

    4" Purolator Puro-13een MERV 13 High-Capacity Pleated Filter

    (We recommend a 4" filter change every 6 months or at the start of each heating and cooling season. For DIRTY environments or most efficient filtration, you may need to change filters more often...do monthly visual checks for the first few months.) This filtration system is the most highly recommended...
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