Product paramete: Items Model Number of plate Outer diameter D Inner hole d Total height L Copper height L1 Increased outer diameter/ hook outer diameter D1 Increased height/ hook length L2 1 DZQD47-RJ32 12 22.4 8 17 14.8 27.1 2.8　 2 DZQD48-RJ32 12 22.4 10 19 16.8 27.1 2.8