Sterifold antimicrobial display panels are specifically designed for working environments subject to strict hygiene standards where multiple users have contact with the display system 10 white-framed, antimicrobial display panels hold letter-size documents for 20 total views Can be expanded to 20 or 30 pockets with the purchase of additional WA221 unit(s) Ideal for hospitals, medical centers, commercial kitchens, food service facilities, offices and reception areas Manufacturers ten-year limited warranty (It is recommended that the Sterifold display panels be replaced every 2 years for maximum protection)