This complete fire brick set lines the full interior of the Hi-Flame Precision 5902 firebox, insulating the stove body from direct heat and reflecting warmth back into the combustion zone for a more efficient burn. When any of the bricks crack or crumble they should be replaced without delay to prevent heat damage to the stove structure behind them. This set replaces the entire interior lining in one go. ✅ Compatible with: Hi-Flame Precision 5902 Inset Convector (includes left, right, and rear bricks) 🔧 Specifications Material: Vermiculite Heat resistance: 1200°C Part type: Full fire brick set (complete interior lining) Buying the full set means all three surfaces are renewed at the same time, avoiding a mismatched firebox with one worn brick alongside new ones. The vermiculite material is lightweight and provides excellent thermal insulation throughout the life of the stove.