10 year guarantee when installed by a G1 Installer, T&Cs apply To activate this decade long guarantee, G1 Installers simply need to fit a Grant Mag One filter and register the boiler within thirty days of installation via the online G1 Portal or G1 Click app. Manufacturer Stock Code:VTX26/46 EAN Code:5056003782387 Sub-Category:Domestic Boiler Brand:Grant Warranty:10 Years Boiler Model:Vortex Pro Output:46 kW Ready for 20% Hydrogen:No Category:Heat Only Fuel Type:Oil Includes Magnetic Filter:No