This listing is for one piece of High Definition Stove Glass for a 'Cast Tec - Firemaster 5 (Square)'.Glass size 240mm x 240mm - thickness 4mm.High Definition Stove Glass© gives you a clearer visual picture of the stove in action and is cut using the latest CNC cutting technology from the highest quality SCHOTT ROBAX© glass-ceramic panels.It has high quality, thermal resistance and can withstand extremely high short-term temperatures of up to 760℃, as well as thermal shocks.Custom glass sizes are available.a.