The external heater of the hot tub is made of stainless steel.

The length of the stove is 50 cm. The thickness of the metal body is 1.5 mm, the door is 2 mm. Hose connection outlets 48 mm, water drainage 20 mm. Chimney diameter 125 mm.

There are three types of metal to choose from:

1. Stainless steel Ansi 430 - Do not use salt and chemicals. The warranty for this type of metal heater is only 3 months.

2. Stainless steel Ansi 304 - Nickel impurities increase corrosion resistance. More salt resistant than ANSI430 type.

3. Stainless steel Ansi 316 - Molybdenum and nickel impurities in the metal increase corrosion resistance. Mechanical properties at high temperatures are better than analogous steels without Mo impurities. Resistant to salts, chemicals like chlorine.