Connect roof outlets to internal duct runs without wrestling rigid geometry. This 100mm flexible pipe provides a secure, adaptable link that seats neatly at each end and maintains an airtight path for soil ventilation or mechanical extraction. The construction resists collapse while staying light in the hand, so crews move faster and fittings read clean. Installation is intuitive—cut to length, push home, clamp and the connection is live. Because the bore remains smooth, airflow stays predictable and fans run at design rates without excess noise. Use it to navigate around rafters, insulation and obstacles that defeat straight pipe; the flex retains shape while absorbing minor movement. On repairs it shortens downtime; on new work it simplifies detailing and reduces the number of hard fittings needed. If you value quick progress and reliable seals, choose flexible pipe 100mm to turn tricky runs into tidy, efficient paths.