Lab Tube Mailer, Outside Height – English 1 5/8 in, Inside Length – English 5 1/8 in, Inside Height – English 1 1/2 in, Holds Container Style Lab Tubes, Holds Number of Tubes 2, Holds Number of Slides Not Applicable, Holds Maximum Tube Diameter 16 mm, Holds Maximum Tube Length 101.6 mm, Holds Slide Length Not Applicable, Holds Slide Width Not Applicable, Material Cardboard, Color Red, White, Standards DOT, IATA, Outside Length – Metric 136.53 mm, Board Test 32 ECT, Package Quantity 300.