PRINETO Wall bushing 16-Rp 1/2

For 1/2" fittings out of dry walls (in combination with locking washer 878 650 019) for heating, plumbing and multilayer composite pipes, for the penetration of e.g. plasterboard, chipboard or concrete plates up to 30 mm thickness, thread M 28 x 1.5, with 2 sound insulation washers, washer and