Above-ground through-wall fittings which allow the riser to be close to the wall. The fittings are steel, with integral screw down stopper for outside safety shut-off. Fitted with polyethylene cladding and external grommet ; supplied with copper crimp sleeve and star washer. The end of the external pipe has a 3/4" or 1" BSP male thread, as listed below. The connection to the MDPE pipe is crimped and requires a crimping tool. GIS/PL3 approved.