No more dealing with tape and leaving messy residue. Protect and secure your hazmat placards with our clear and durable placard shields. These shields help prevent deterioration and damage to placards due to rain, wind, and rough road conditions. Just insert the clear shield over your hazmat placard in your trailers placard holder and snap into place. We have updated the plastic shields from acrylic to PETG, due to its cold weather hardiness to help eliminate breaking or cracking during the winter months. These shields help prevent your placards from folding or blowing out of any DOT sized placard holders. Contains a thin removable plastic on both sides of the shield to prevent any scratches from shipment. The protective plastic film may be blue or white in color to ensure you receive the product in perfect condition. NOTICE: PLEASE REMEMBER TO PEEL OFF & REMOVE plastic protective film from both sides to reveal the clear placard. Sold as a set of 4.