Does a NG furnace typically come with filter box? - HVAC-Talk

Why Does The Furnace NOT Come With A Filter Slot Cover? furnace filter slot 3 Answers 3 Those gaps are normal and don't usually cause a problem When the furnace is running the air pressure forces the filter against 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

come capire se una slot deve pagare furnace filter The problem is you might think you are doing everything correctly but if you have