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over extractor fan - how to fit ducting?

  • 01-09-2013 10:34pm
    #1
    Linto
    Registered Users, Registered Users 2 Posts: 171 ✭✭


    The over extractor fan has a 120mm extractor. Problem is, the builder (who has now left) drilled a 4" air vent.

    Is is a problem to convert to a 4 inch from 120mm without reducing effectiveness of the fan?


Comments

  • #2
    dodzy
    Registered Users, Registered Users 2 Posts: 10,180 ✭✭✭✭dodzy


    Linto wrote: »
    The over extractor fan has a 120mm extractor. Problem is, the builder (who has now left) drilled a 4" air vent.

    Is is a problem to convert to a 4 inch from 120mm without reducing effectiveness of the fan?

    You'll be grand. 4" outlet ( unobstructed ) will be fine.


  • #3
    One shot on kill
    Registered Users, Registered Users 2 Posts: 2,249 ✭✭✭One shot on kill


    4 inch will be grand the extractor should actually have a reducer in the box or in the fan somewhere.


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