Tension Spring 10mm Outside Diameter x 1mm x 1m Insulation Products a direct vent grille neck

a direct vent grille neck adaptor can be used with a direct vent grille with a curved blade or a direct vent egg crate grille

Hot Dipped Galvanised and Stainless Steel

This essentially allows you to start a new duct branch off the main duct line by attaching it like a "saddle" onto existing pipe/ducting

Connection ends of the FlexRight expand to conform to flexible duct diameters 102-406mm

Heat by friction

Tension Spring 10mm Outside Diameter x 1mm x 1m Insulation Products a direct vent grille neckIn HVAC systems, tension springs (also called extension springs) are primarily used to maintain tension on components, ensuring proper airflow and position by providing a consistent pulling force to bring parts back together when they try to separate, effectively controlling movement and maintaining the desired position within the system ; they essentially store and release energy to facilitate smooth operation of various HVAC mechanisms. Key points