Bradford White ICON System Features - High Input Combustion System - Integrated Mixing Device - Factory installed Hydrojet 2 Total Performance System - Vitraglas lining - Fully automatic controls - 3/4" NPT side connections - Non-CFC Foam Insulation - 3/4" NPT factory installed dielectric waterway fittings - Two Protective magnesium anode rods - 4" "Snap Lock" Draft Diverter - Helical Fin Flue - T&P relief valve installed - Brass drain valve