28x30x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack ventilation and ducting Reduces biofilm - Keep lines

Reduces biofilm - Keep lines clear of dangerous organic material

two-way moisture regulation in a compact round form factor — keeping herbs

• Light weight

Formula is sediment-free and is compatible with mechanical dosing systems (Dosatron)

80+ KHz High Frequency Ballast

28x30x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack ventilation and ducting Reduces biofilm - Keep linesNordic Pure 28x30x4 Pleated Air Filters MERV 12 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home. Each time air passes through a Nordic Pure pleated furnace filter, lint, household dust, pollen, dust mites, pet dander, smoke particles, virus carriers, bacteria, mold spores and other contaminants are removed. All Nordic Pure pleated air filters are manufactured using a heavy