HeatVac Kettle Companion 10" - Heated Vacuum Chamber Mod Turns your kettle chamber into an accurate home vacuum oven with customized digital temperature control at your fingertips 10 diameter, designed for kettle vacuum chambers 10-12+ diameter - See our store for our 8" heater for kettles smaller than 10" Uses only 250 watts of power compared with a vacuum oven which uses up to 1500 watts Digital temperature control accurate within +/- 1 degrees fahrenheit Money-back 30-day satisfaction guarantee, 1-year warranty