This Bristan Traditional Shower Valve Adjustable Pipe Centres - Adjustable Elbows Meaning this shower will replace Showers with 110mm centres 130mm centres 138mm centres as well as the industry standard 150mm...any anything in between. This Bristan Monarch traditional shower valve is an ideal replacement for the Bristan Colonial and Bristan Regency traditional shower valves See below for further details on this Bristan Mini mixer with adjustable centres Benefits Easy installation with adjustable elbow inlets which enable you to use on existing pipework centres between 110mm and 155mm so there's no need for retiling 15mm inlet connections 5 year parts and 1 year labour guarantee for peace of mind. Dual control - flow and temperature are controlled separately Bristan Monarch.