GHRQ-I-V Series Aluminum Plank Aluminum Zinc plating Water tankABS Cover, support angle 45 Outer tank diameter 420 mm / Diameter 47 mmTube:Ø 47mm x 1500mm GHRQ-I-V47-420-15: 15 tubesGHRQ-I-V47-420-18: 18 tubesGHRQ-I-V47-420-20: 20 tubesGHRQ-I-