10x33x1 Exact MERV 13 AC Furnace Filters 6 Pack tents-/-indoor-greenhouses 5 in H and weighs

5 in H and weighs 42

All setups with more than four daisy-chained fans must have their inline speed controller set to high to prevent overload

Bacterial Blotch

Calibration automatic

10x33x1 Exact MERV 13 AC Furnace Filters 6 Pack tents-/-indoor-greenhouses 5 in H and weighsNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200