Complete controlled watering system to fit all Palram greenhouses. Sealed regulating unit with pressure regulator and filter system reduces water pressure stream through irrigation hose and removes sediments from water. Dripping Regulator - creates an equal and controlled dispersal of water in all droppers keeping your plants healthy and evenly watered. System Includes: 10m drip lines 16 droppers 3/4" adapter 4 T connector 4/6 mm Complete step by step assembly instructions included.