4" Duct Connector Flange, 4 Pack Dryer Vent Wall Plate Square to Round Straight Ducting Plate for Air Heating Cooling Ventilation Exhaust Fan, Black 76mm-66.6mm Inner Diameter (d): 12mm

Inner Diameter (d): 12mm

Please install them in place near the interference source

for GMC Safari SL

Please install with power off of the battery

4" Duct Connector Flange, 4 Pack Dryer Vent Wall Plate Square to Round Straight Ducting Plate for Air Heating Cooling Ventilation Exhaust Fan, Black 76mm-66.6mm Inner Diameter (d): 12mmThe 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 Interface: 97 mm 3. 82 inch Fit for Ducting Hose with Inner Diameter: 100mm 4 Inch Overall Dimensions: 120 x 120 x 70 mm 4. 72 x 4. 72 x 2.