Here is an amazing "Even Heat" screen that "makes a 'top of the range' oven for baking and roasting". It "distributes heat slowly and evenly" and "prevents scorching and burning of foods". With "Even Heat - any pot becomes a double boiler, for electric or gas ranges, heat resistant handle, and it roasts - toasts - bakes - simmers". The diffuser is in unused condition in its original packaging. Shipping will be discounted on multiple orders.