Flexible 100mm (4″) ducting for use in cold roof spaces. This ducting retains the ambient temperature of the room, thus preventing steam condensing back into water and dripping back into a property.- Suitable for the extraction of hot and cold air.- Suitable for the extraction of air from wet areas, such as bathrooms.- Suitable for commercial and domestic use.- Helps to prevent structural damage- Ideal for vertical installations- 10mm (4″) diameter- 10m long- Material: PVC- Fire retardant