Insulated Flex Pipe 4" X10' easy to use a product that's suitable for general purpose venting, look no further than Dundas Jafine's flexible insulated ducting. This black jacket insulated connector is listed and marked UL 181 and cUL 181 class 1 connector, making it perfect for residential use in general ventilation applications including heating, air conditioning, intake,, and exhaust. - Your Online Roofing Store 🏡 No Minimum Order Required 👌 Best Price For Everyone 🛠 Shop Online at https://www.roofvents.ca/ 🌐 Limited stock available -