Shipping Box, Box Style Cube, Heavy Duty, Wall Type Double Wall, Inside Length 18 in, Inside Width 18 in, Inside Height 18 in, 18x18x18 in Inside LxWxH, 48 ECT, RSC, Outside Length 18 3/4 in, Outside Width 18 3/4 in, Outside Height 19 in, 18 3/4x18 3/4x19 in Outside LxWxH, Wall Thickness 1/4 in, Fluting Profile C Flute, Maximum Load Capacity 100 lb, Material Corrugate, Color Kraft, Post-Consumer Recyclability 100 Percent, Standards ASTM D5118