Domus Ventilation

Frequently asked questions

What Domus ducting do you stock?

We stock Domus Ventilation products covering rigid round PVC ducting and flat channel ducting systems with the full range of fittings and accessories. The round ducting range covers 100mm, 125mm and 150mm diameters in 1-metre and 2-metre straight lengths. The flat channel range includes System 100 (110x54mm) for compact runs behind kitchen units and in ceiling voids, Supertube 125 (204x60mm) for higher airflow applications, and MegaDuct 220 (222x92mm) for the highest airflow capacity with minimum height. Each system includes straight lengths, 45° and 90° bends, tee pieces, connectors, adaptors, clips, wall plates, outlets with gravity flaps, and round-to-rectangular adaptors for connecting to standard circular fan spigots.

What is Domus Supertube?

Domus Supertube 125 is a flat channel ducting system with a 204x60mm profile that provides equivalent airflow to 125mm round ducting in a much shallower depth, just 60mm. This makes it suited to installations where ceiling void height is limited or where ducting needs to run behind kitchen cabinets or under floors. Supertube components connect using push-fit joints and include straight lengths, bends, tee pieces, connectors and round-to-rectangular adaptors. The smooth internal bore minimises airflow resistance compared to flexible ducting. Supertube is widely specified for cooker hood extract runs and bathroom ventilation in new builds and renovations.

Is Domus the same as Polypipe Ventilation?

Yes, Domus Ventilation was formerly known as Polypipe Ventilation. The company rebranded to Domus Ventilation with new management and customer service teams, but the product range and specifications remain the same. If you have been specifying or installing Polypipe Ventilation ducting, the Domus part numbers and fittings are directly compatible. Domus is a UK manufacturer of residential and commercial ventilation ducting systems, and their products are available through specialist ventilation distributors including eFans.

What is the difference between System 100, Supertube and MegaDuct?

The three Domus flat channel ducting systems differ in profile size and airflow capacity. System 100 (110x54mm) is the most compact and provides airflow equivalent to 100mm round ducting, suited to bathroom and utility extract where duct runs are short. Supertube 125 (204x60mm) provides equivalent airflow to 125mm round ducting and is the most widely used flat channel system for kitchen extract and longer duct runs. MegaDuct 220 (222x92mm) provides the highest airflow capacity, equivalent to 150mm round ducting, and is used for high-airflow applications or where multiple extract points feed into a single duct run. All three systems use rigid PVC construction with smooth internal bores for low airflow resistance.

Do you stock Domus round ducting?

Yes, we stock Domus rigid round PVC ducting in 100mm, 125mm and 150mm diameters. Each size is available as straight lengths (typically 1m and 2m) with the full range of fittings including 45° and 90° bends, straight connectors, reducers (150mm to 125mm, 125mm to 100mm), pipe fasteners, hose clips and wall plates. Rigid round PVC ducting has a smooth bore that provides lower airflow resistance than flexible ducting, making it the better choice for permanent installations. Round-to-rectangular adaptors are also available for connecting to Domus flat channel systems.

Can I mix Domus ducting with other brands?

Domus round ducting uses standard 100mm, 125mm and 150mm external diameters, so it connects directly to any fan or fitting that uses standard circular duct sizes. The flat channel systems (System 100, Supertube 125, MegaDuct 220) use Domus-specific profiles and dimensions, so fittings from other flat channel brands may not be compatible without an adaptor. If you need to connect Domus flat channel ducting to a round fan spigot, round-to-rectangular adaptors are available in our range. Contact us at hello@efans.co.uk if you need help selecting the right fittings for your installation.