Duct Connector Flange, DAYREE 4 Inch Plastic Straight Pipe Flange with 4 Mounting Holes for Dryer, Heating Cooling Ventilation System

Specification? Material:ABS Shape:Square flange Installation:Wall mounted Application:Indoor ventilation system Package?1 pcs x duct connector flange How to install the duct connector flange: 1. Fix the duct connector flange on the wall with screws 2. Put a hose clamp on the duct connector flange 3. Connect the duct connector flange and the pipeline tightly 4.Tighten the hose clamp with a screwdriver until the elbow is fixed to the pipeline. Gently drag to ensure that it does not slip off accidentally.