471616TB
1. Reliable and efficient with double vacuum-glass solar tubes
2. Easy plug-in installation
3. Outer tank material: Powder coated color steel sheet
4. Inner tank material: 0.5mm thick SUS304 food grade stainless steel plate
5. frame material: 1.2mm color steel
6. Superior heat preservation ensured by 50 - 65mm polyurethane foam insulation layer
7. Water temperature and level Controller(optional)
8. Electric booster heater with anti-creepage plug for cloudy, rainning day using(optional)

Automatic filling & draining System controls the heater; User could control by the quantity and temperature. (optional)