The blanking plate sits on the outlet at the top or rear of The Hobbit and Hobbit SE Stove to cover the hole you don’t want the flue to exit from. You might decide to change your Hobbit Stove from a top exit to a rear exit or vice versa. To do this, you will need to blank off the hole with a blanking plate if you don’t already have one. You can see how to add/remove the blanking plate here.