20x30x1 Pleated MERV 13 Air Filters 3 Pack Tents & Tarps Includes 4 pH buffer solution

Includes 4 pH buffer solution in a sponge embedded in a clear cap

so you can see if it's dried up

Detailed instruction manual

Unlike silica gel or one-way desiccants that only absorb moisture

Self ballasted design with no adaptors required

20x30x1 Pleated MERV 13 Air Filters 3 Pack Tents & Tarps Includes 4 pH buffer solutionNordic 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