Shipping Box, Wall Type Single Wall, Inside Length 12 in, Inside Width 12 in, Inside Height 20 in, 12x12x20 in Inside LxWxH, 32 ECT, RSC, Outside Length 12 3/8 in, Outside Width 12 3/8 in, Outside Height 20 5/8 in, 12 3/8×12 3/8×20 5/8 in Outside LxWxH, Wall Thickness 1/8 in, Fluting Profile C Flute, Maximum Load Capacity 65 lb, Material Corrugate, Color Kraft, Post-Consumer Recyclability 100 Percent, Standards ASTM D5118, Inside Length Range 12 in to 13 in Length Shipping Boxes