Kelvion GBS700M heat exchangerThe heat exchanger below is replaceable 1 on 1 with the Kelvion GBS700M without having to modify the pipeworkGBS 700M-30GBS 700M-34GBS 700M-40GBS 700M-44GBS 700M-50GBS 700M-60GBS 700M-70GBS 700M-80GBS 700M-90GBS 700M-100GBS 700M-110GBS 700M-120GBS 700M-130GBS 700M-140GBS 700M-150GBS 700M-160