... a long life-spanFiltration area of pleated stainless steel filter elementHigh dirt holding capacityis increased by pleatingFiltration rating: Available ... available according to customer's requirement. Common sizes include:35 series: at length of 102mm, 207mm, 210mm, 424mm, 485mm, ... of 410mm, 525mm, 870mm, 1395mmø57mm series: at length of 1025mm, 1472mmø60mm series: at length of 500mm, 1000mm, 620mm, ...