Uxcell Duct Reducer, Pipe Increaser Adapter Ducting Airflow Tube Pipe Fittings 12" to 6"

Height: 170 mm / 6.69 inch Inner Diameter: 315 x 160 mm / 12.4 x 6.3 inch (Big*Small) Outer Diameter: 328 x 169 mm / 12.91 x 6.65 inch (Big*Small) Packing List: 1 Pcs x Duct Pipe Reducer Connectors