What is a U-Value?
4:44
Added: 8 months ago
From: EnergySaversIreland
Views: 1,069
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  • very good. =)

    

    simonsolberg 2 weeks ago

  • thanks, good explanation :)

    igloo098 3 months ago

  • Excellent, simple explanation! Great job, thanks for posting.

    Pat19eighty4 3 months ago

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