Acrylic Liquor Bottle Shelves - Clear 3 Tier 12 inches Display your liquor bottles behind your bar in a fast, easy and economical way. These Acrylic Shelves are durable and easy to assemble. They are available in 2 or 3 tiers, 12 inches in length. The 2 tiers are also available in 18 inch length. 2 Tier measure 6.25" high x 10" deep, 3 Tier measure 6.75" high x 12" deep.