200mm - 350mm telescopic pipe 150mm diameter ducting

200mm to 350mm telescopic pipe 150mm diameter ducting • Inner pipe internal diameter 150mm +- 0.4mm • Outer pipe internal diameter without ring 154.4mm +/- 0.4mm • Outer pipe external diameter without ring 158mm +/- 0.4mm • Colour white • Material pipe only flame retardant plastic UPVC • Temperature range max +50°C min -15°C • For use with 150mm diameter round ducting ventilation system 150 • Connector type round female ends