Resideo 203368 Air Cleaner Pre-Filter 12.5" X 16" X 11/32"

The Resideo 203368 Air Cleaner Pre-Filter is an essential part of keeping the indoor air quality high. This pre filter is for specific Resideo air cleaner models and is the first part of the defense against airborne contaminants. This captures larger particles such as a pet hair, pollen and mold spores before they even hit the main filtering system. Pre filter traps these larger particles and prolongs the usable life of the primary filter, reduces overall HVAC system maintenance and improves air cleaner efficiency.