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Double Glazing Knowledge


ERV, is the Energy Reduction Verification scheme that the BSI have created to independently verify and certify, companies and the products they produce in accordance with their Kite mark scheme.

Tip all licensed products are required to be marked, so ask the installer for the details of the produces before you order and then check they have the appropriate labels

Either verify here or check companies direct on the BSI web site www.bsigroup.com