Literature Mailer Literature Mailer Type Standard Wall Type Single Wall Inside Length 12 1/2 in Inside Width 5 in Inside Height 3 in Inside LxWxH 12-1/2x5x3 in Board Test 32 ECT Outside Length 13 1/4 in Outside Width 5 1/2 in Outside Height 3 1/4 in Outside LxWxH 13-1/4x5-1/2x3-1/4 in Wall Thickness 5/32 in Fluting Profile B Flute Maximum Load Capacity 65 lb Material Corrugate Color White Post-Consumer Recyclability 100 Percent Standards ASTM-D-5118