Used to fill in fireplace openings together with a closure plate. Made from thin aluminium, the angles can easily be cut and bent to shape. By cutting inverted Vs along one of the angles they can also be bent to form an arch, and so follow a curved fire opening. British Gas plc job instructions show these angles being used with double sided tape (P/N 6980 shown above) and closure plates. These infills may be used as shown in the illustration to provide the face for the closure plate. If the fireplace has no overhang a third infill may be used along the top.