External dimensions: 310x215x30 mm. The external dimensions are suitable for efficient storage and transportation. Flute type: B Weight: 310 g/m² FEFCO number: F0473 Intended use: for shipping books and products of similar sizes Very easy to fold Color: Gray For shipping: Poczta Polska Letter L, Poczta Polska Parcel A, InPost A, Pocztex S, Orlen Paczka S Unit weight (+/- 5%): 94 g Why is the Multimail box 310x215x30 mm worth it? Multimail cardboard (book packaging, book shipping packaging, multibox, roll box) is a packaging designed for quickly packing and easily shipping books. The selected fluting increases the box's stability. Cardboard weight: 310 g/m². The cardboard weight guarantees sufficient protection of the contents. Delivery: flat packed (base + lid). The boxes are delivered flat to reduce storage space and transportation costs.