Another harsh environment where you will find our wall sign frames is in manufacturing. Many of these factories have a lot of dust and oil. The PlexiPocket holder is up to the job. Use them to post MSDS sheets and equipment operation steps. Again, being made of rugged durable plastic acrylic, plexipockets can withstand the environment. Each plexipocket comes with 3M VHB (very high bond) double-face tape on the back with which to mount the sign frame.