The fire coals / pebbles only appear in fires that do not have a closed burner section. They serve 2 functions. The first is to allow the heat to be emitted from the fire. The second function is safety, they are made to slot together in a specific way tha
Fits a number of Glow-worm Fires
Technical specification
TypeFuel BedsManufacturer Model NoS210272Brand NameGlow-worm