Supplied with a manufacturer�s backed 25 year cylinder warranty and 2 years parts warranty. Diameter is 545mm from capacities 90L to 300L. Manufactured from high grade Duplex Stainless Steel. Supplied with high-quality unvented components and mounting cradles. Supplied with a mechanical cylinder stat for simple electrical installation. 22mm compression connections complete with nuts and olives. Market leading and highly efficient primary coil which reduces reheat time and saves fuel bills. Long-life 3kW Incoloy immersion heater supplied as standard. Supplied with all safety controls as required by UK Building Regulations. Manufacturer Stock Code:ESHPS3170 Sub-Category:Indirect Brand:UK Cylinders Capacity:170 L Range:Elite Category:Cylinders NCB:Yes Type:ASHP