Yellow Mountain Imports Classic Wooden Mahjong (Mah Jong, Mahjongg, Mah-Jongg, Mah Jongg, Majiang) Racks, 18 Inches, Set of 4 Set of 4 racks Measures 18 inches (45.7 centimeters) in length Rack lip comes out 0.5 of an inch (1.25 centimeters); the back rest where the the back surface of the tiles rest on is 0.8 of an inch (2 centimeters) high Made of solid wood 30-day return policy: here, at Yellow Mountain Imports, we want you to be satisfied with your purchase; you are backed by our 30-day no questions asked money back guarantee so you can buy with confidence Length of Rack: 18 inches (45.7 centimeters) This set comes with 4 mahjong racks. Mahjong tiles are <span class="a-text-bold">not</span> included. These mahjong racks are made of solid wood. These racks are a full 18 inches long and will accommodate up to 19 mahjong tiles that are up to .9 of an inch wide. This is more than what many of the shorter racks that are currently on the market can accommodate.