The duct connector flange is primarily used to connect vent air hoses (not included). Widely used in home, kitchen, bathroom, garage, and office. Suitable for the area which needs a ventilation system.SpecificationColor: RedMaterial: ABS PlasticOuter Diameter of Interface: 195 mm / 7.7 inchOverall Dimensions: 235 x 235 x 90 mm / 9.3 x 9.3 x 3.5 inch (L*W*H)Diagonal Mounting Hole Distance: 222 mm / 8.7 inchAdjacent Mounting Holes Distance: 101 mm / 4 inchPacking List: 1 x Pipe Connector FlangeAdvantage1. The connector is made of ABS plastic material, which has good corrosion resistance and temperature resistance and is durable.2. The connector base has screw mounting holes, which can be directly fixed on the wall with screws without drilling, and the installation is convenient.InstructionFor ducted ventilation systems, mount the duct connector to the wall and attach your exhaust hose to our duct connector.NOTE: Please confirm the outer diameter of the connector before placing an order. Also, please note that screws are not included in the package.