Very happy with these air filters. They are perfect for my 5 Ton Infinity 2 Carrier Fan Coil #FE4ANB06000. These filters fit directly into the filter slot without any problems. For some reason it has been several years since I changed the filters in our HVAC system. I'm glad the old filters were clogged with dust. It was really bad judgment on my part not to think about replacing these filters sooner. Clogged filters put a tremendous strain on your huddler's fan, allowing dust and debris around the filter to enter the duct. In the future I will definitely check the filters every 3 months and most likely replace them every 6 months, a year at most. The actual thickness of this filter is 7/8 inch. The 7/8" thickness matches the original size of the OEM filter carrier and allows the filter to easily fit into the 1" filter slot.
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