Literature Mailer Literature Mailer Type Standard Wall Type Single Wall Inside Length 11 1/2 in Inside Width 11 1/2 in Inside Height 3 3/4 in Inside LxWxH 11-1/2x11-1/2x3-3/4 in Board Test 32 ECT Outside Length 12 1/4 in Outside Width 12 in Outside Height 4 in Outside LxWxH 12-1/4x12x4 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