Why are there two air filter slots in my HVAC system?

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You can also measure the filter slot Your filter's MPR indicates its ability to capture tiny particles between and 1

furnace filter slot The thicker filters last longer because of their increased density What size of filter you can use in your furnace depends on the size of the slot You may be

best slot games to play in vegas Protect Your Health and Home: FilterLock seals one inch furnace and AC filter slots to improve indoor air quality and reduce utility bills