These heavy-duty, two-piece microscope slide boxes store up to 25 standard slides (3 x 1" or 75 x 25mm). Available with either cork or foam lining. The boxes stack securely on top of each other, and are available in blue, green, red, yellow or white. Measures 5.5 x 3.5 x 1.24" or 141 x 88 x 35 mm.