2Pcs 3.5" Duct Connector Flange Exhaust Straight Pipe Hose Fitting Adapter

[WHAT TO GET]:Constructed from galvanised steel, this connector is compact, robust, durable, corrosion-resistant, rust-resistant, and heat-resistant, ensuring long-term use. The ventilation duct connector promotes smooth and efficient airflow, ensuring your equipment operates efficiently and maintains indoor air quality.[WHEN/WHERE TO USE]:This duct connector flange is suitable for connecting your tumble dryer, bathroom or kitchen exhaust fan, hydroponics system, ducted air duct, range hood, or kitchen exhaust fan to your ventilation system.[WHAT IT IS]:2pcs Duct Connector Flange; Color: Silver; Material: Galvanised Steel; Outer Diameter of Interface: 89mm / 4"; Flange Diameter: 139mm / 5"; Hole Diameter: 8mm / 0.31"; Installation Height: 98mm / 3.86"; Total Height: 101mm / 3.98"; Mounting Hole Distance: 114mm / 4.49"[HOW TO USE]:Easy to install, the bottom of the connector is equipped with screw installation holes. After connecting the exhaust hose to the duct connector, it can be directly fixed to the wall with screws(not included) without drilling holes. You can also directly weld the duct flange to the ventilation duct system.[WHAT TO AVOID]:Please confirm the interface outer diameter of the connector before placing an order. Manual measurement has certain errors.