Cardboard Storage Boxes feature a convenient hinged lidConstructed of sturdy, coated cardboard with durable plastic dividersEvery well is labeled with coordinates in three places: Outside lid, along the inside and outside walls; bottom of the wellsDividers are removeable in one piece, offering a versatile storage optionOperating temperature range of -196C to 121CIdeal for 1.5mL, and 2.0mL Micro Centrifuge Tubes/Screw Cap Tubes, and 1.0mL and 1.8mL Cryogenic Vials