TISHITA 4xAir Duct Adapter 100mm to 75mm Accessory for Home Office Lightweight

TISHITA 4xAir Duct Adapter 100mm to 75mm Accessory for Home Office Lightweight.Duct Reducer Tool can be used to connect two different size duct to creating a seamless ventilation system pipeAir Duct Adapter for connecting 100mm to 75mm (4inch to 3inch) duct system height 80mm/3.15 inchDucting Tube Increaser Adapter is made of pp material lightweight andthe two ends of with of appropriate sizeDuct Reducer Increaser Connector suitable for bathroom kitchens apartment home office hotel systemTISHITA 4xAir Duct Adapter 100mm to 75mm Accessory for Home Office Lightweight