Quantity   Component name
1 × 12V 300W 150mm round Silicone Heater
1 × 1" x 1" x 12" Balsa wood or Bass wood
1 × 1/8" automotive cork gasket
1 × 12VDC 30A power supply
1 × 12V 30A Appliance Relay
1 × Heavy Duty 3 prong power cable
1 × SPST Switch MAin switch
1 × 180mm diam. pyrex circle 3mm-5mm thick.