Shipping Box, Box Style Flat, Wall Type Single Wall, Inside Length 34 in, Inside Width 21 in, Inside Height 6 in, 34x21x6 in Inside LxWxH, 32 ECT, RSC, Outside Length 34 3/8 in, Outside Width 21 3/8 in, Outside Height 6 5/8 in, 34 3/8×21 3/8×6 5/8 in Outside LxWxH, Wall Thickness 5/32 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 27 in to 36 in Length Shipping Boxes