DIG- TOP-300, Drip Emitter 12-Outlet Manifolds Kit Assembly With 3.3 GPH per Outlet, BlackDrip Tubing Manifold Kit Type Manifold, 12 Outlet, Self Flushing Emitter Size 1 2 Inch End Connection Female Threaded Material High Impact Plastic Inclusions Features Nylon Filter, High Impact Plastic Cover, Silicon Diaphragm, Stakes and 1 4 Inch Converter Barbs, 1 8 Inch Distribution Tubing Used On Item Distribution Tubing Dimension 3 Inch Width x 2 Inch Height Flow Rate 3. 3 GPH Pressure Rating 15 to 50 PSI (Operating), 8 to 80 PSI (Compensating)