Heatilator Hearthbrick and top for Black Glass walls (must order Reflective Black Glass walls as well) (Heirloom) - 2271-053. Reflective glass liners add depth and sparkle behind the flame and are cut for a specific firebox size. Confirm your fireplace model and firebox dimensions before ordering, and install according to the manufacturer's instructions. Handle glass carefully and wear gloves during installation. Special order - contact us for a quote.