Imamura Shiko Non-transparent envelope with window, 20 squares, white, 100 pieces with tape 4957470033181

Square 20 size that fits A4 paper perfectly in a windowed envelope. It is hard to see the contents because of the background pattern printing on the inside. ●Quantity: 100 pieces●External dimensions (vertical) [mm]: 324●External dimensions (horizontal) [mm]: 229●Basic weight: 100g/㎡●Lamination: center●Color: white●Material: Window area = glassine paper