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Spare 58mm or 47mm (please select) twin wall solar tube with or without Copper Absorber including heat pipe and internal reflectors (please select)


NB - we cannot send spare tubes by courier. Collection only. Please contact us to arrange collection. We may have a stock closer to you than our offices, including North Wales, Devon, West London and Kent. 


Length 1800mm / 1500mm

Outer tube diameter 58mm / 47mm

Inner tube diameter 45mm / 36mm


Glass thickness 1.6mm

Material Borosilicate Glass 3.3

Absorptive coating Graded AlNAl

Vacuum degree P<5Ã?10-2 Pa

Thermal expansion 3.3?10-6 °C

Insolation Temperature >200°C

Absorptance >93%

Emissivity <8%

Heat loss <0.8W(m2°C)

Maximum pressure 0.8Mpa

Resist cold -35 °C

Resist hailstone 25mm

Resist wind 30ms

Start-up temperature 25°C

Navitron Evacuated Solar Tube - COLLECT ONLY

Sales Tax Included

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