Strainer Screen Perforated Screen Size 0.033 in Length 5 5/8 in Screen Material 304 Stainless Steel Seal Material Spiral Wound Graphite Filled Strainer Type Perforated Compatible Mfr Model Number 11/2 581 CS Screwed End 11/2 582 CS Socket Weld Compatible with Grainger Part Number 1RNE2 1RNF1 Cv Flow Factor 30 gpm For Use With 11/2 582 CS Socket Weld Mfr No 11/2 581 CS Screwed End Standards ASSE CSA FM NSF UL ULC USC WQA