The Argos Technologies vertical/chest freezer rack measuring 3-5/8 Inch x 5-1/2 Inch x 29-4/5 Inch, features anti corrosive construction of stainless steel material which ensures durability. It holds up to 12, 2-7/16 Inch microtube boxes. Rack comes with a locking rod which ensures added security to the boxes. Easily place and retrieve racks using sturdy dual handles Included locking rod securely holds boxes in place Sturdy corrosion-resistant stainless steel construction for long-term use