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. See below for further details on this Bristan Mini mixer. Bristan Regency Features Dual control Flow and temperature are controlled separately giving accurate control of both. Thermostatic cartridge maintains showering temperature to +/- 1oC by compensating for changes in the incoming water temperature and pressure providing a stable outlet temperature. Automatic shut off in the event of hot or cold water supply failure thus reducing the risk of injury. Factory set to a maximum of 43oC to eliminate the ability to select an unsafe temperature - this can be adjusted to suit user preference. Swivel inlet elbows with 110-155 centres valves can be fed from top bottom or rear. Supplied with 1.5m shower hose riser rail hose retainer and single function handset. Chrome plated to BS EN 248. Minimalistic Sequential Mixer Lever with adjustable centres of 110 - 155mm. Elbows can be adjusted for exposed pipework running up and down the wall at the wide range of centres mentioned above. Each Bristan Mini Valve comes with 2 sets of elbows allowing you to replace almost any shower mixer valve which has centres or 110mm or 155mm or anything inbetween. Choose the correct elbow configuration to suit your Inlet centres: 2 x small elbows 110-130 centres 2 x large elbows 136-155 1 small elbow / 1 large elbow 125-145 Valve Only - No Riser Rail Supplied