Flexible ventilation ducting made from high-quality flame-retardant aluminum and built-in corrosion-resistant wire helix for reinforcement and lasting performance. Wide variety of applications in ductwork system, perfect for Heating Ventilation and Air Conditioning (HVAC), Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, etc. Features - Color: Silver. - Material: Aluminum and Steel. - Size: 200 x 16 x 16 cm. - Fire Proof Coating: Flexible ventilation ducting made from high-quality flame-retardant aluminum and built-in corrosion-resistant wire helix for reinforcement and lasting performance. - Non-insulated Ducting: 100mm diameter 1m long air duct, made of thick and durable aluminum, fire-resistance coating foil vent ducting, simple to keep clean. - Wide variety of applications in ductwork system, heat filters, medical rooms, air conditioner, bathroom, greenhouse, tent grow room, air tight system and stove vent, circulating the atmosphere, air-conditioning the flow, removing heat from an enclosure, distributes CO2, increases temperature and humidity levels and etc. - Application Scenarios: Perfect for Heating Ventilation and Air Conditioning (HVAC), Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, etc. - Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you