Protect your valuable prepared slides with the best storage box on the market! These are the same boxes we use in the warehouse to store our own inventory. These robust boxes have cork lined interiors, with a permanent, etched-in number at each slot, in addition to a numbered labeling sticker inside of the lid. The 25 slide box has a snap-cap lid. The 50 slide box has a hinged lid with a snap-cap latch.