FI EW 18LR W3 SV Manifolds Clamp Assembly Heavy Series Size blank filter Element Clamp Assembly Heavy Series Size 3S Ø8mm Aluminium W13 Mounting Rail Nut Cover Plate Clamp Assemblies Heavy Series Size 4S Ø17 Nut On Standpipe Straight Male Stud Fitting 1 2 BSP Metallic Sealing" Adjustable Standpipe Elbow Size Type: 18L Cutting Ring