Features: 1) Available in both aluminum and hardwood frames 2) Board: white painted steel sheet (or porcelain coated steel sheet, double-sided), cork sheet 3) Material durability and safety 4) Availability of products built to accept several different types of writing implements including chalk, pencils, permanent markers, or crayons as well as dry erase pens 4) Dimensions: a) 20 x 60cm b) 30 x 45cm c) 45 x 60cm d) 60 x 90cm 5) Other specifications available upon request 6) For gift use,also use card box between the plastic film and the carton packing layer Inner packing: Plastic film Outer packing: 1) LW-3045: 50pcs/ctn Carton dimensions: 37.5 x 47 x 62cm 2) LW-4560: 25pcs/ctn Carton dimensions: 37.5 x 47 x 62cm 3) LW-6090: 15pcs/ctn Carton dimensions: 22.5 x 62 x 92cm