I recently finished my first rack built out of melamine. It is 4ft long X 2ft deep X 6ft tall. It currently holds (24) 32 quart tubs (or (48) 16 quart tubs). Total cost in materials including tubs and heat tape was around $450 with a VE-300 thermostat. Much cheaper than a comparably sized vision rack. I have had great success with my homemade version. If you have even a small amount of construction skill, building your own rack is definitely the way to go at this stage of your collection. And if you ask real nice, Home Depot will cut the melamine to your specifications for you.