Stauff RE 130 G 20 V 4 OBE Spare parts 5 β ratio >2 blank filter Element 5 β ratio >2 Replacement Filter Element for Return Line Filters Micron Rating: 25 µm Material: Stainless Mesh Outer Diameter (mm): 115 Glass Fibre Outer Diameter (mm): 95 Inner Diameter (mm): 48 β ratio >200