Eccentric connector between rectangular duct 204x60 and round duct D125

The 620SP12,5KP is an eccentric (offset) duct adapter that connects a 204×60 mm rectangular (flat) ventilation duct to a Ø125 mm round duct or pipe. Unlike a centered adapter, the round outlet is offset flush to one edge of the rectangular cross-section rather than centered on it — this makes it the right choice wherever the round side needs to align flush with a ceiling, wall, joist, or an existing off-center round stub, for example behind a cooker hood, above a suspended ceiling, or wherever headroom above the duct run is limited.

Made from durable white plastic, the round outlet has a plain spigot end sized for a direct push-fit into a Ø125 mm round duct of the same diameter; the rectangular end mates with standard 204×60 mm flat duct fittings. For a fully airtight joint we recommend sealing the connection with aluminium duct tape.