Constructed of durable polypropylene, slide boxes hold either 25 or 100 standard slides (25 x 75 mm and 1 x 3"). Hinged lids are held securely closed by latch lock. Stacking feet maximize stability. No liner. The 25-place box measures 141 x 92 x 36 mm; 100-place box measures 210 x 169 x 37 mm.