FUBESK Round Ducting Reducer 75/100/120/150/200mm,

Universal Reducer Connector Diameter 80-150 mm

AZITICY Metal Flange Ventilation Pipe Connector

AZITICY Metal Flange Ventilation Pipe Connector

PATIKIL 6 Inch to 3 Inch Round Duct Reducer

Aluminum Exhaust Vent Pipe, Flexible Hose

Exhaust Hose Adapter 150 mm to 100 mm, Round

Aluminum Exhaust Vent Pipe, Air Ducting with 2

IkErna Round Pipe Flange Seat Abs Aluminum Tube

Aluminum Exhaust Vent Pipe, Ventilation Air

Square To Round Flange Interface Ventilation Duct