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Glasfloss Industries FD6ZLP18202 18x20x2 MERV 10 HVAC 2" Depth Air Filters. Box of 6. Actual Size: 17-1/2 x 19-1/2 x 1-3/4
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2-Pack Air Filter Factory Replacement For Broan Nutone QT2000 WA6500, 99010317, BPQTF, WA65F, S99010317 Aluminum Mesh Charcoal Combo Filter - Walmart.com
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Trion 266649-105 Air Bear 16x25x5 Inch MERV 13 High Performance Air Purifier Filter Replacement 3 Pack for Air Bear Air Cleaner Purification Systems - - Amazon.com
![Just got an HVAC installed and have never seen a filter like this. The guys at installation didn't explain it either. What should I know? Never seen one like it. : r/hvacadvice Just got an HVAC installed and have never seen a filter like this. The guys at installation didn't explain it either. What should I know? Never seen one like it. : r/hvacadvice](https://preview.redd.it/xita126tzdp81.jpg?auto=webp&s=523e8e464446c004068bd1152a02bf305d3e83a0)