15x23x1 Exact MERV 13 AC Furnace Filters 6 Pack Pest and Disease Control Specifically designed for high-frequency electronic

Specifically designed for high-frequency electronic ballast

Includes six 3' Sturdy Stakes

and as the description indicates

Nordic Pure 12x24x4 Pleated Air Filters MERV 13 are made of electrostatically charged synthetic materials that attract and capture most airborne particulates in your home

Does the BlackBird require active cooling or fans

15x23x1 Exact MERV 13 AC Furnace Filters 6 Pack Pest and Disease Control Specifically designed for high-frequency electronicNordic 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