Shipping Box Wall Type Single Wall Inside Length 18 in Inside Width 13 in Inside Height 5 in 18x13x5 in Inside LxWxH 32 ECT RSC Outside Length 18 3/8 in Outside Width 13 3/8 in Outside Height 5 5/8 in 18 3/8x13 3/8x5 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 17 in to 19 in Length Shipping Boxes