For our 3M Dynock Film(Self Adhesive Cosmetic PVC Film), it is a genuine 3M product, not a copy product. Great for custom car panels and refrigerators. If you do not have any experience in installation, we recommend that you ask a specialty store. 30 cm wide has a margin of around 5 mm. There are 39.4 inches (100 cm) lengths of 41.3 inches (105 cm). *Squeegee may vary.