Duct Joiners & Reducers

Connect and adapt your ventilation ductwork with duct joiners and reducers from Vent Experts. Whether you are planning a DIY upgrade or a professional installation, these duct fittings help connect duct sections and accommodate changes in diameter. Explore practical options for ventilation projects in Australian homes and commercial premises.

Our collection includes galvanised steel duct joiners, duct reducers and increasers, aluminium reducer collars, and reducers with foam insulation. Duct joiners connect sections of the same diameter, while reducers and increasers provide transitions between different duct sizes. Choose from size combinations including 150mm to 100mm, 200mm to 150mm, and 250mm to 200mm, checking each product’s dimensions before ordering.

When connecting ductwork to inline exhaust fans, match the fitting to the fan connection and your system’s airflow requirements. Reducing duct diameter can increase airflow resistance, so consider the complete duct run when selecting an adaptor. Use compatible duct clamps and appropriate sealing materials to secure connections and help minimise air leakage.

Complete your installation with our wider range of ducting and accessories. From extending an existing duct run to connecting components of different sizes, Vent Experts offers duct connectors and transition fittings to help DIY users and ventilation professionals assemble a suitable system.