The Below and Above Ground Drip Irrigation Line with a diameter of 13.7 mm is installed underground where it is not visible and serves the irrigation of bordering plants and lawn areas. * The drip head spacing in the pipe is 30 cm, each head gently waters 1.6 l/h. The drip heads are self-sealing so that they do not dirty after being put into storage. * The drip heads have a root blocker that prevents roots from entering the installed, underground pipe. * With a Master Unit fitted in the middle, the Drip Irrigation Line can be extended with the Extension Set Art. No. 1395-20; the maximum length is 200 meters. * The water pressure is the same at every point in the Drip Irrigation Line, to ensure even irrigation. The Drip Irrigation Line is supplied ready-to-connect with the Master Unit 1000, 1 End-piece and 1 T-Joint, and has a length of 50 meters.