Hard board:
Size:1220*2440*2-6mm(4'*8')
Color:dark or light brown
Face/back:face side smooth and back side rough
Glue:E1,E2

Hardboard:

1)Size: 1220 x 2440mm(4'x8')
2)Thickness: 2.0mm to 6.0mm.
3)Color: Dark brown or light brown
4)Face and back: Face side smooth and back side rough
5)Kind: Standard, waterproof hardboard, hardboard with glue
6)Application: Used for packing or as back of photo frame