Iwachu Japanese Cast Iron Tetsubin Teapot Warmer Heater – Large. From the Iwachu casting works in Japan, this cast iron teapot warmer is a perfect addition to one of our cast iron Teapots. Simply place a tea-light inside, then this iron warmer will keep your cast iron teapot at the optimal temperature, thus ensuring that your tea always stays warm. The top part can also be removed and used separately as a trivet. Item Details – MATERIALS: Cast iron DIMENSIONS: 13 x 13 x 7 cm ORIGIN: Japan. Measures 13 x 7 cm. Made in Japan by Iwachu. Item Dimensions LxWxH: 2.76 x 5.12 x 5.12 inches. Number of Trays: 1. Product Dimensions: 2.76 x 5.12 x 5.12 inches. Item Weight: 2.22 pounds. Item model number: 9719. Date First Available: April 12, 2013. Except on weekend or public holidays. We stand behind our products. Your receive the wrong item.