High quality vertical racks for chest freezers or liquid nitrogen tanks are made of corrosion resistant stainless steel. Using the internal dimensions obtained for your chest freezer or liquid nitrogen tank determine the maximum height (H) and number of racks you need for your chest freezer or liquid nitrogen tank. All racks include stainless steel locking rods. This rack holds standard sized 2 inch boxes, both cardboard (81 or 100 place), 81-place polypropylene, and 100-place polycarbonate boxes. Freezer rack dimensionsH x W x D: 20 1/16 x 5 5/8 x 5 1/2 inch This rack will NOT accommodate 100 place hinged polypropylene (plastic) boxes.