Wall reference system with 10 Sterifold black-framed display pockets. Combines the recognized characteristics of stainless steel (will not rust) and silver ion-treated anti-microbial PVC display pockets to deter microbial growth by eliminating micro-organisms. Display pockets are utilized by many different people throughout the course of a day. Tarifold’s Sterifold display pockets will release antimicrobial silver ions every time bacteria, mold, or fungi appears on the surface of the pockets. Silver ions will do the following to the microorganism: attack the cell wall; interrupt metabolism; prevent reproduction. For optimal protection, we recommend the display pockets be replaced every 2 years. Especially suitable for environments at high risk of microbial proliferation, including restaurants, medical, and pharmaceutical environments. 10 year product warranty.