4" to 3" Duct Reducer, 3 Pack ABS Ducting Airflow Tube Increaser Adapter Pipe Fitting for HVAC Heating Cooling Air Ventilation Systems 13mm X 0.5mm X 250mm *Material: Rubber Foaming

*Material: Rubber Foaming

Shank Diameter: 5

The products are widely used in car maintenance

Package Included:55(+/-2%) x Flat Washer Gasket

Size: 12mm/0

4" to 3" Duct Reducer, 3 Pack ABS Ducting Airflow Tube Increaser Adapter Pipe Fitting for HVAC Heating Cooling Air Ventilation Systems 13mm X 0.5mm X 250mm *Material: Rubber FoamingThis duct pipe reducer connector is used to connect the pipes of equipment such as bathroom fans, range hoods and dust collectors to the ventilation duct system, you can connect two air ducts of different diameters to create a seamless ventilation system duct. Suitable in home, offices, kitchen, factory or apartments. Specification Color: White Material: ABS Height: 80 mm 3. 15 inch Inner Diameter: 100 x 75 mm 3. 94 x 2. 95 inch (Big*Small) Outer