Feature 1. Reduce Cross-Infection. 2. Keep the Phosphor Storage Plate Clean. 3. Easy to use. 4. Low cost, Disposable Use. 5. Compatible with Scan-X Air Techniques and many other brands For use Imaging Plate (Digital Sensor), it is used to protect the IP and avoid cross inflection among the doctors and patients . Barrier Envelopes Size #2 for Intra Oral X-Ray ScanX Phosphor Storage Plates Package list : choose the quantity you need FDA Statement: The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. This item has been cleaned and treated according to the manufacturer's instructions