Teacher Desktop Barrier Foldable Stainless steel hinges. Vinyl base with 3M VHB double sided tape. 6 mm thick Museum Grade Polycarbonate. 3 sided protection shield. Keeps teachers safe without restricting classroom floor space. Rounded edges to avoid injury. 36" high above the desk. Desktop barrier comes fully assembled ready to use. Fully assembled. Low maintenance, easy to clean and store. UL 94 Flammability Rated Meets OSHA requirements of 36" high above desk to limit airborne exposure.