3 microns. HEPA filters are encouraged especially for people suffering from allergy symptoms and respiratory challenges, but you require an equipment with HEPA filtration in order to use this sort of filters; Arvada-based Vacuums R Us is a major-manufacturer vacuum retailer that also provides cleaning products, and as An important http://vacuumsarvada61470.aioblogs.com/47670209/arvada-vacuum-things-to-know-before-you-buy