Made of white PVC plastic which has excellent corrosion resistance EL02-523 PVC CONNECTOR FOR FLAT DUCTS 220x55MM brand ELMARK with guaranteed quality. Check out and the other products in the category Accessories for vtilation systems Plastic pipes are a versatile and reliable solution for ventilation systems and offer a number of benefits that make them an ideal choice for various applications. Steinberg14 White 125 mm - 220x55mm Rectangular to Round 90 Degree Bend - Plastic Elbow Adapter Air Con Pipe Connector 5 Inch / 125mm Ducting Round To Rectangular Adaptor 220x55mm Flat Ducti Channel Connector Aircon Hose Extension Kit Lightweight and easy to fit plastic duct system ideal for ventilation systems Upgrade your ventilation system with our 220x90 duct. This low profile flat PVC ducting is ideal for spaces where traditional ducting won't fit Whether it is a residential or commercial project, the light weight simplifies the assembly process and reduces the time and effort required for installation. One of the main advantages of plastic ducts is their light weight, making them easy to handle and install.