Domus RDM-MD220 9 Way Radial Manifold

£330.11 £275.09
Lead time
Usually ships in 5 working days
75mm Radial Manifold with Flat Duct Side Entry

Dramatically reducing installation time and cost, the RDM-MD220 manifold is a key component of the Domus Radial Duct system. Neatly connecting duct work in a whole house MEV or MVHR system, it may be used on either the extract or intake channel.

Connecting to the main ventilation unit via a flat duct spigot, the RDM-MD220 offers 9 x 75mm duct ports which channel the air carried by the 75mm ducting via the plenums and radial grilles. At 125mm deep, the unit is extremely compact allowing for installation in even the tightest spaces.

With inherent insulation and sound attenuation properties, it helps prevent condensation and limiting heat loss and noise. This reduces the requirement for duct silencers.

Please see the installation guide to the left.


  • Offers an improved airflow over traditional MVHR ducting methods
  • Combines with Silavent / Domus 75mm semi-rigid ducting
  • 125mm deep for installation between joists or tight spaces; making the location/its positioning very flexible
  • 9 potential duct outputs for input or extract air

How does a Radial system work?

Radial ducting is the latest innovation on ventilation systems and can provide a quieter and more efficient ventilation system compared to rigid ductwork.

Radial Ducting is a system of individual smooth bore pipes which are crushproof, semi flexible with zero air loss. The pipes have an anti-static and antibacterial lining which individually connects each room to a manifold

The manifold takes mass airflow directly from the MVHR Heat Recovery Unit and allows lower rates to pass through to each individual room run eliminating noise transfer and increasing the efficiency of the heat recovery unit

The radial ducting is designed to be installed below the loft insulation to provide a superior heat retention over pre-insulated solid rigid above the loft insulation

Radial semi rigid ducting is suitable for any type of property; including timber framed houses, passive house approval homes and can be used in areas with limited access.

Product Data
Brand Silavent
Manufacturer's Part Number RDM-MD220
Lead time Usually ships in 5 working days
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