White Corrugated Cardboard Mailer Box, 4 3/8" L x 4 3/8" W x 3 1/2" H, Pack of 50, Crush-Proof, for Shipping and Mailing UPS, USPS and FedEx

Literature Mailer, Literature Mailer Type Reinforced, Wall Type Single Wall, Inside Length 4 3/8 in, Inside Width 4 3/8 in, Inside Height 3 1/2 in, Inside LxWxH 4-3/8x4-3/8x3-1/2 in, Board Test 200#, Wall Thickness 1/8 in, Fluting Profile B Flute, Material Corrugate, Color White, Post-Consumer Recyclability 100 Percent, Standards ASTM-D-5208, Package Quantity 50