T-joint for rectangular ducts 120x60

The 612TPP is a T-shaped duct fitting that lets you branch a 120×60 mm rectangular (flat) ventilation duct run without changing cross-section. All three connection ports — the two in-line ports and the branch port — share the same 120×60 mm size, so it fits directly between standard 120×60 mm flat duct sections and fittings.

Made from durable white plastic, it is the standard component for creating a branch or T-junction in an all-flat-duct system — for example splitting supply air to two rooms, or joining a secondary run into a main duct — without switching to round ducting anywhere. For a fully airtight installation we recommend sealing each joint with aluminium duct tape.