Stauff GMV 5042 PP H DPAL AS M W13 Spare parts Replacement Filter Element for Return Line blank filter Element Replacement Filter Element for Return Line Filters Micron Rating: 25 µm Material: Stainless Mesh Outer Diameter (mm): 128 Inner Diameter (mm): 91 Straight Male Stud Fitting Size Type: 28L 1 5 8 UNF Hex Head Bolt Smooth without Initial Tension