MTC Bio's Cryogenic Boxes come equipped with a hinged lid, ideal for efficient and safe storage of 1.2mL to 2.0mL cryogenic storage vials. Autoclavable for long-term use, they are designed to withstand temperatures from -196°C to +121°C. Compatible with standard 5.25 inch freezer racks, they feature a clear lid with printed indexing for quick sample identification.