The white envelopes with window a 60 cm and 20 cm Right, commercial, so that it is a must have for the shipping all-purpose postal protection. They are also available in the formats Commercial: with window or without opening windows. Your messages privacy Warranty thanks to their printed inside. Adhesive closure with cover strips. The silicone protects the adhesive and make for a perfect fit. 2 years shelf life. Cover made of vellum, White, Grey Interior Pearl quality 80 g/m² Available to the following formats: according to: C5 (162 x 229 mm). For your postal, you think your labels and, to ensure accuracy, laser or inkjet printers with these secure labels Key Manufacturer graphics