Pipe centres on radiators are important when you changing just the radiator without altering your pipes. Common mistake when towel rails are purchased is for pipe centre. Normally it is assumed width of the towel rail is the pipe centre but actually 40-45mm less than the width.Standard size TOWEL RAIL sizes in the industry is between 400-600mm width. As Elegant Radiators, we are working hard to keep all possible sizes for your pipe centre, so you have straight forward job on replacing the towel rail. We have narrowest Slim Towel Rails with 200mm wide towel rails which has only 155mm pipe centre. We also stock below width towel rails;Width Pipe CentreOne SideElbow + A.ValveBoth SideElbow + A.Valve200mm wide155mm220mm285mm250mm wide205mm270mm335mm300mm wide255mm320mm385mm350mm wide305mm370mm435mm400mm wide355mm420mm485mm450mm wide405mm470mm535mm500mm wide455mm520mm585mm550mm wide505mm570mm635mm600mm wide555mm620mm685mm650mm wide605mm670mm735mm700mm wide700mm720mm785mm750mm wide705mm770mm835mm800mm wide755mm820mm885mm850mm wide805mm870mm935mm900mm wide855mm920mm985mm950mm wide905mm970mm1035mm1000mm wide955mm1020mm1085mm1100mm wide1055mm1120mm1185mm1200mm wide1155mm1220mm1285mm1300mm wide1255mm1320mm1385mmIf pipe centre is not same, pipes need to be bent accordingly. However, if you are not plumber and no tools available we have alternative option to this problem.With elbows, pipe centre of the towel rail become exactly same with as towel rail width, just like normal panel radiators. You can then attach your angled valves for your pipes coming out of wall or floor. Each TOWEL RAIL ELBOW and ANGLED OWEL RAIL VALVE will increase or decrease 60-70mm.