Kair Plastic Ducting Pipe 150mm - 6 inch / 1 Metre Long Length - Rigid Straight Duct Channel. Kair System 150 (SYS-150) Round Ducting provides superior airflow performance. Perfect for long duct runs for high power extraction systems and whole house ventilation. Made in the UK. Outer Diameter - 153.60mm. Made from high-quality white uPVC plastic. Max / Min Temperature: +60c / -15c. Complies with Part F Building Regulations. Free Air = 17,673 mm. Static Pressure Drop: 15 l/s = 0.10 Pa, 30 l/s = 0.40 Pa, 60 l/s = 1.20 Pa. Lightweight and easy to install with push-fit connections. Joints can be sealed with silicone sealant, solvent cement, or tape for permanent fixings. Can be cut to size with a hacksaw. Use male connector part DUCVKC365 to join two female straight duct lengths. Use round pipe fixing clips (Part: DUCVKC442C) to fix ductwork to walls and ceilings. Consider pre-insulated ducting for cold areas to prevent condensation.