Connection Size B2 1/4 inchConnection Size A2 1/4 inchERP (Energy Efficiency)NPipe Connector TypePlugConnection MaterialMetalTypeFittings - Plugs, Caps & Stop EndsSuitable forImmersion heaters / hot water cylinder immersion elementMaterialMetalDiameter2 1/4 inchSupplier Part Number31IHPWBrand NameUnbranded