Pre-filter keeps Miracle Air PM-400 air purifier (not included) working more efficiently. This is the first stage filter of 3 filters in the Miracle Air PM-400 hospital quality HEPA air filtrationsystem with dual UV lights. The impregnated, activated carbon pre-filter traps large particles like dust and pet hairs, protecting the HEPA filterand extending its life.
Change this activated carbon impregnated prefilter every 4 to 6 months. Protect the HEPA and carbon potassium permanganate filter cartridges. Carbon pre-filter size is 14" x 15" x 60". Pictured is the Miracle Air PM-400. No picture of the carbon pre-filter is available.
