Lab Slide Mailer, Wall Type Single Wall, Inside Length 3 in, Inside Height 1 in, Inside LxWxH 3×1 in, Holds Container Size 3 in L x 1 in W, Holds Container Style Slides, Holds Slide Length 3 in, Holds Slide Width 1 in, Holds Number of Slides 5, Holds (5) 3 in L x 1 in W Slides, Outside Length 3 1/8 in, Outside Width 3/4 in, Outside Height 1 1/4 in, Outside LxWxH 3-1/8×3/4×1-1/4 in, Material Polypropylene, Color Kraft, Package Quantity 25 Package of 5.