Shipping Box, Large Office, Kitchen, Wall Type Single Wall, Inside Length 21 in, Inside Width 15 in, Inside Height 15 in, 21x15x15 in Inside LxWxH, 32 ECT, RSC, Outside Length 21 3/8 in, Outside Width 15 3/8 in, Outside Height 15 5/8 in, 21 3/8×15 3/8×15 5/8 in Outside LxWxH, Wall Thickness 3/16 in, Fluting Profile C Flute, Maximum Load Capacity 65 lb, Material Corrugate, Color Kraft, Post-Consumer Recyclability 100 Percent, Standards ASTM D5118