Strainer Screen Perforated Screen Size 0.033 in Length 4 5/8 in Screen Material 304 Stainless Steel Seal Material Spiral Wound Graphite Filled Strainer Type Perforated Compatible Mfr Model Number 1 581 CS Screwed End 1 582 CS Socket Weld Compatible with Grainger Part Number 1RNE8 1RNU6 Cv Flow Factor 15 gpm For Use With 1 582 CS Socket Weld Mfr No 1 581 CS Screwed End Standards ASSE CSA FM NSF UL ULC USC WQA