4" Duct Connector Flange, Dryer Vent Wall Plate Square to Round Straight Ducting Plate for Air Heating Cooling Ventilation Exhaust Fan, Black 8mm X 70mm * Strong magnetic

* Strong magnetic

Bit Dia: 4

Dimension: 79x27x20mm / 3

installed small size and generate strong force

Mounting Holes Size: 4

4" Duct Connector Flange, Dryer Vent Wall Plate Square to Round Straight Ducting Plate for Air Heating Cooling Ventilation Exhaust Fan, Black 8mm X 70mm * Strong magneticThe duct connector flange is mainly used to connect the duct hose (not included) to an output port through a bolted connection. Widely used on the home, kitchen, bathroom, garage, and office. Suitable for this area which needs a ventilation system. Specification Color: Black Material: ABS Plastic Outer Diameter of Top Interface: 90 mm 3. 54 inch Outer Diameter of Bottom Interface: 98 mm 3. 86 inch Fit for Ducting Hose with Inner Diameter: 100mm 4 Inch