Swan Single Boiling Ring The Swan Single Boiling Ring features a cast iron heating plate: 188mm. It also disposes of a thermostatic control and thermal fuse for overheating. It has a stainless steel top panel, a non-slip feet and 1m cord. Comes with power on indicator lights. Colour: Stainless Steel Power Capacity: 1500watt Dimensions: Depth: 26cm x Width: 28cm x Height: 8.7cm