Type: Solar Water Heater Number Of Tubes: 24 Water Tank Capacity: 300Litre Galvanized Technology Tube Length: 1800mm Outer Tube Diameter: 58mm Inner Tube Diameter: 47mm Glass Thickness: 1.6mm Thermal Expansion: 3.3x10(-6) celsius Absorptivity: >=93% Coating: AL-N-AL Inner Tank: SUS 304-2B with 0.5mm thickness Outer Tank: Galvanized Steel with 0.4mm thickness Frame: Galvanized Steel with 1.5mm thickness Insulation: 50mm of high density polyurethane foam Price is Including of Installation Charge Guarantee: 5 Years on Water Tank Warranty : 10 Years on Solar Brand Omni SKU 100354477_NP-1020630943 Water Heater Type Solar Model 24-Tube