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[_] underscore plumbing

Oliver Humpage oliver at
Wed May 29 22:39:12 BST 2013

On 29 May 2013, at 21:46, Steve Kirtley wrote:

> Definitely the foil concept helps.
> I bought some of these in a lightning deal last year - made a massive
> difference:

Is it worth installing that kind of thing if your radiators are on internal walls?