RZ Large Backpack / Office - Back to School PTAC HEPA filter a human hair is ~70

a human hair is ~70 microns

Up to 50% better breathability than standard F1 filters

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1 micron with an activated carbon layer that neutralizes organic odors

Built by RZ Mask — The company behind 3+ million respiratory protection products sold worldwide since 2010 — The RZ AIRFlow applies the same filtration engineering that defines the RZ Mask lineup to the spaces where people sleep

RZ Large Backpack / Office - Back to School PTAC HEPA filter a human hair is ~70Product Description: RZ Large Backpack Features: Dimensions: 22" tall x 14" wide x 10" thick Material: Durable, high quality fabric Mesh Pockets: Ideal for holding water bottles Interior Pockets: Multiple compartments for organization High Quality Zippers: Smooth and reliable closure Athletic Design: Comfortable and supportive straps for active lifestyles Spacious Main Compartment: Plenty of room for essentials Padded Back Panel: Provides comfort and