FI REDS 28 12L W3 SV Rotex Koppeling Glass Fibre Outer Diameter (mm): blank filter Element Glass Fibre Outer Diameter (mm): 72 Inner Diameter (mm): 45 Length (mm): 150 Sealing: NBR Clamp Assembly Heavy Series Size 6S Ø42mm Aluminium W12 Weld Plate for double Clamps Cover Plate Zinc Nickel Plated Straight Standpipe Reducer Size Type1: 28L Size Type2: 12L Cutting Ring&Nut On Standpipe Steel