DescriptionSpare Parts Description Product main featureswith concealed anti-vacuum deviceConsisting of:-concealed-pipe-interrupter ref.-no. 28 994(A2 type, DIN 1988, part IV)- 3.5 m-flexible connection pipe (in 2 parts)without escutcheon (19 954) Spare Parts Related products Grohe GROHE Concealed pipe interrupter, DN 20 #28994000