Plastic Ducting Equal Y Junction 100mm / 4 inch Can be used to duct in to different areas and join different duct runs together. Male spigot will fit inside Kair 100mm Round Pipe or 102mm Flexible Hose. Built to last out of high-quality white Polystyrene/Polypropylene plastic Material. Kair plastic ducting is lightweight, durable and suitable for commercial and domestic use. It is perfectly suited for ducting your tumble dryer, bathroom or kitchen extractor fan, hydroponics, in-line extract fans, or cooker hood., Manufacturer: Kair