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An actual duct that will fit a 127mm hole

Discussion in 'Building' started by Sprogginz, 6 Jun 2016.

  1. Sprogginz

    Sprogginz

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    I want to buy this
    http://www.screwfix.com/p/erbauer-diamond-core-drill-bit-127mm-x-150mm/99629
    to fit a vent for a cooker hood extractor and was going to buy something like this
    http://www.screwfix.com/p/manrose-cooker-hood-kit-125mm/17489
    because it's 125mm so should fit in a 127mm hole right?

    But reviewers are stating it's not 125mm but larger and I've found a lot of other products like this too.

    Can anyone actually point me to some products where they know will go into a 127mm hole for an extractor that is for 125mm ducting so that I don't find myself scratching my head?

    Thanks very much and hope you can help.
     
  2. kazuya

    kazuya

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    if you read the reviews for the cooker hood kit, someone says "The erbauer 127mm core drill is perfect for the job if used with the plastic tube - the metal flexi-tube will not fit."
     
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  4. Sprogginz

    Sprogginz

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    Thanks for your reply.
    I read that so basically there's no point buying this kit but buy separate items instead?
    I can see a plastic tube on screwfix with a 125mm external diameter but 350mm in length, so would the length be still fine for a double cavity wall?
    Thanks again.
     
  5. kazuya

    kazuya

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    yea 350mm will be long enough to go through a cavity wall
     
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