990523 Sub micron Replacement Filter Set for superseded models is the standard level of filtration for the superseded Billi Home range. In addition to removing sediment and chemicals it will also remove other health threatening pollutants, including giardia and cryptosporidium. Suits superseded Home model as follows: B-1000 Series 1 .rTable { display: table; width: 100%;} .rTableRow { display: table-row; } .rTableHeading { background-color: #ddd; display: table-header-group; } .rTableCell, .rTableHead { display: table-cell; padding: 3px 10px; border: 1px solid #999999; } .rTableHeading { display: table-header-group; background-color: #ddd; font-weight: bold; } .rTableFoot { display: table-footer-group; font-weight: bold; background-color: #ddd; } .rTableBody { display: table-row-group; }