Dimension DN25, consisting of return distributor with upper thermostatic inserts (M 28 x 1.5), supply distributor with upper shutoff inserts. Vent and drain with hose connection, distributor connection with female thread Rp1", distributor outlets with G 3/4" Euro-cone connection. Accessories compression adapters (1 6098 xx) and ball valves (1 2224 03/13, 1 2205 13/23) must be ordered separately.