PolarSafe™ Freezer Storage Racks are made of high-quality, corrosion resistant stainless steel. Designed for Upright or Chest ultra low freezers, filling all major ultra low (-80°) freezers on the market. The handles at both ends can accommodate a freezer with a right or left hand door. The broad product range will accommodate all type of sample containers, including 2", 3", and 5" boxes, microtiter and deepwell plates and 15 & 50 mL centrifuge tubes.