18x20x2 Pleated MERV 8 Air Filters 3 Pack Environmental Controllers Nordic Pure 12x24x4 MERV 8

Nordic Pure 12x24x4 MERV 8 Pleated Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer

then add Elite 91 SILICIC ACID

They are shipped as developing pupae on hanging tabs

Promotes bushier plants with an increase in flowering sites

They breath like clay

18x20x2 Pleated MERV 8 Air Filters 3 Pack Environmental Controllers Nordic Pure 12x24x4 MERV 8Nordic Pure MERV 8 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 and other contaminants are removed. MERV 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters