This LX Flow Type Heater Model H30-R1 is the perfect addition to your hot tub setup. With a voltage of 220/240, this electric heater is designed to efficiently heat up the water in your hot tub. The set includes 2 items, and each item has a height of 4 1/2 inches, a length of 10 inches, and a width of 2 inches. The heater is manufactured by LX, a trusted brand in the industry, and is suitable for use in saunas, pools, and spas. It is compact and lightweight, weighing only 3 pounds, making it easy to install and use. This heater model is a great investment for any homeowner looking to enhance their outdoor living space. Tested and works.