Shipping Box Wall Type Single Wall Inside Length 30 in Inside Width 18 in Inside Height 18 in 30x18x18 in Inside LxWxH 32 ECT RSC Outside Length 30 3/8 in Outside Width 18 3/8 in Outside Height 18 5/8 in 30 3/8x18 3/8x18 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 27 in to 36 in Length Shipping Boxes