Welding Coupling Square Head Equal Ends

This welding coupling features equal ends and a square head design, made from durable ABS plastic for HVAC and ventilation applications. It is sized to fit 110mm air ducts and is intended for permanent welded installation. The coupling provides precise alignment during assembly due to its symmetrical, equal-diameter configuration. Its square head allows secure gripping with standard wrenches or fixtures, supporting consistent torque application during welding setup. Compatible with ABS and other weld-compatible thermoplastic ducting materials used in residential and light commercial ventilation systems.