The Graphite 10 (GR910) Boiler Centre Grate is the genuine replacement grate for your Hi-Flame Graphite 10 Boiler. It sits in the base of the firebox, supporting the fuel load and allowing ash to fall through for collection below. Grates wear over time from sustained heat and the mechanical action of riddling. This spare part fits the original position and gets the stove back to proper working order.