TECHNICAL SPECIFICATION FOR HEADER ASSEMBLY Material : PP (Polypropylene) & MetalSize Range : 2” to 4”Application : Filtration unit for drip and mini sprinkler irrigation system. PLASTIC HEADER FLANGEND PLASTIC HEADER THREADED PLASTIC TEE FLANGEND PLASTIC ELBOW FLANGEND (BEND) COLLAR THREADED FLANGEND MS HEADER ASSEMBLY