This product can be fitted to a central heating system provided it has been treated with a corrosion inhibitor. If you are unsure if your system had been treated please consult with your plumber. This product can also be installed electric only or dual fuel using one of our electric elements. Steel profiles & tubes meet UK & international standards D profiles are 1.5mm wall thickness for optimum strength & life cycle Horizontal tubes are 22mm diameter for enhanced performance Horizontal tubes are 1.2mm wall thickness for optimum strength & life cycle Deep brazed D profile ends completely eliminate pin holes Threads are 11mm deep to aid sealing during installation Individually air tested to 16 bar to guarantee no leaks D profile end is closed for easier installation & enhanced aesthetics No moisture left inside before packaging, to eliminate internal corrosion Meticulously hand crafted to guarantee the finest top quality Highly advanced but proven technology chroming plant