Hi, Have just purchased a 2007 Hymer c-512 cl Camp LHD on a Ford Transit Mk 7 chassis. In the cupboard there is a large silver `ingot' sized alloy sort of rectangular block with inner diagonal stress fins with various numbers on it and the Ford stamp. Its about 6'' long by 4'' tall and weighs about 5-6 kg's, wrapped in bubble wrap. It also has two `tunnel' openings or cutouts either end as if it is supposed to go over something with pipes???? Anyone know what it is or does?