Brand: Sun-Shine Tube length : 1899mm Outer tube diameter : 58mm Inner tube diameter : 47mm Galss thickness : 1.6mm Thermal expansion : 3.3*10-6°c Absorptivity : ³ 93% Coating : White Colour Inner Tank : SUS 304 -2B with 0.5 mm Outer Tank : colour coated steel with 0.44 Frame : Stainless steel with 1.5 mm/1.2 mm Insulation : 50mm of high density polyurethane foam" Numbers of Tubes : 24 Capacity : 300Ltr Dimensions (L*B*H) : 193cm*145cm*168cm Delivery and Installation Free inside Kathmandu, Valley 10 Years Warranty (3 Years Replacement and 7 Year Service Warranty)