The Endro Scientific ultra-low (-50°C TO -86°C) freezer is one of the most reliable and affordable ULTs on the market. They are an ideal lab freezer for tissue sample storage or bulk vaccine cold storage. These dual compressor ULT's feature a cascade cooling system and have the power to hold temperatures around -86°C with very little temperature fluctuation. On-board data logger Door thickness: 3.54” (90mm) Dual gaskets for an air-tight seal 3 shelves are adjustable by 1" increments Quantity: 500 boxes (2") Warranty: two-year parts, labor, or full replacement Watch this short video for an overview of the Endro26ULT Download the specifications sheet or manual.