Expansion Vessel SizeNot ApplicableIncludes Expansion VesselNoERP (Energy Efficiency)YStanding Heat Loss kWh/24h2.24Number of Immersion Heaters1Years Guaranteed25 Year Material Guarantee On Cylinder ShellWidth550mmUsageUnvented Hot Water Cylinder; Suitable for Oil Boilers, Air Source Heat Pumps and Solar Thermal Systems; Available Pre-PlumbedTypeCylinders - Indirect UnventedTank Capacity284Solar CompatibleCompatible With Air Source Heat Pumps And Solar Thermal SystemsPower kW3 kWMaximum Operating Pressure3MaterialStainless SteelHeight2.054mEnergy Efficiency RatingCERP RatingCDepth550mmConnection Size22 mm Compression FittingColourGreyCold or Hot WaterHotCoil TypeTwin Coils (Stainless Steel Internal Coils)Capacity300 LSupplier Part NumberQRTC300Range DescriptionQR CylindersManufacturer Model NoQRTC300Brand NameGrant