Shipping Box, Wall Type Single Wall, Inside Length 18 in, Inside Width 18 in, Inside Height 16 in, 18x18x16 in Inside LxWxH, 32 ECT, RSC, Outside Length 18 5/16 in, Outside Width 18 5/16 in, Outside Height 16 5/8 in, 18 5/16×18 5/16×16 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, Inside Length Range 17 in to 19 in Length Shipping Boxes