Guarantee applies to sinks installed according to installation instructions, used as recommended and in normal residential conditions, and cleaned as per cleaning instructions. The guarantee is valid only with fully completed warranty card and with sales receipt containing date and place of purchase. The guarantee does not cover misuse, accidental damages, improper installation, unauthorized repair or alteration, abnormal usage, negligence or damage caused by improper maintenance or cleaning. Mechanical damages, scratches, scale and normal wear of parts are excluded from the guarantee.