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External Duct diameter (external) vent axia Kinetic


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Building the walls to our plant room which will house 1 of our MVHR units and keen to avoid drilling through 20mm of reinforced concrete so will fit some duct in place. The quote I have for the mvhr unit mentioned 150mm dia ducts but wondered if anyone knows the external diameter of the duct?

 

Was hoping to fit some short sections of this sloping slightly down to the outside and then (at a much later date!) slide the real duct inside and fill the gap between the pipes with low expansion foam.

 

 

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  • 4 weeks later...

depends on the unit. smaller models are 125mm, larger ones like the Plus are 150mm. I just measured some offcuts and the 125 is about 129 externally and the 150 is about 155mm so can't see why a 160mm sleeve in effect would be a problem as long as the 160 refers to the internal diameter :)

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