[60 size x 10 sheets]
URU-ZON Cardboard, Made in Japan, 60 Size, B5 Compatible, External Dimensions 10.4 x 7.6 x 4.6 inches (26.3 x 19.2 x 11.8 cm), Hardware Fastening Type, Heavy Duty, Home Delivery, Delivery, Packaging, Storage, Box, Storage, Solid Color