25x25x1 Pleated MERV 14 Air Filters 3 Pack nutrients-and-supplements KALIX Silica is 45% silicon

KALIX Silica is 45% silicon dioxide derived from diatomite

- Turn off all fans and ventilation during the treatments

filling a hydroponic reservoir

and easy to follow directions

Polyethylene film is a thick

25x25x1 Pleated MERV 14 Air Filters 3 Pack nutrients-and-supplements KALIX Silica is 45% siliconNordic Pure MERV 14 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 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.