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The HART COOLEY 102499021 is a pleated furnace air filter rated MERV 11, sized 20 x 25 x 2 inches. It captures a broad range of airborne particulates including dust, pollen, mold spores, and fine debris that lower-rated filters miss. MERV 11 filtration is well suited for residential and light commercial HVAC systems where improved indoor air quality is a priority without significantly restricting airflow. Licensed HVAC technicians and knowledgeable DIYers install this filter as a direct-fit replacement during routine maintenance or at scheduled filter change intervals.
This filter is designed for forced-air furnace and air handler applications using a 20 x 25 x 2 inch filter slot. It fits standard filter cabinets and return-air grille housings common in residential gas and electric furnace systems. The pleated media design increases surface area compared to flat-panel filters, supporting longer service intervals while maintaining consistent airflow across the filter face. It carries manufacturer model number MERV1120252 and is sold individually.
Designed as an OEM-style replacement filter for residential and light commercial forced-air furnace and air handler systems requiring a 20 x 25 x 2 inch MERV 11 pleated filter.
HVAC technicians and qualified service professionals install this filter during scheduled maintenance. Power down the furnace or air handler at the disconnect or thermostat before opening the filter cabinet. Note the airflow direction arrow printed on the filter frame and orient it toward the blower, not toward the return duct. Replace this filter at intervals recommended by the equipment manufacturer or more frequently in high-dust or high-occupancy environments.
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