14x24x1 Pleated MERV 13 Air Filters 6 Pack biological fertilizer We recommend using this filter

We recommend using this filter in conjunction with our 6" fan for optimum efficiency

1/2" NPT threads for in-line mounting

This mother culture concentrate is all-natural

With a noise level that can reach 9 dBA

14x24x1 Pleated MERV 13 Air Filters 6 Pack biological fertilizer We recommend using this filterNordic 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