Proudly American
Work backward from where the piece appeared
Note whether it was seen after a delivery of firewood, after sweeping, or when the last load was removed. Record the position in the firebox as found and the visible outline above, from the room with the appliance cold. Do not run your hands over a broken board or disturb a fibrous layer. The bottom brick, side lining and overhead parts are different items even when fragments have similar color.
Use the correct parts drawing
Look for the diagrams for the exact insert model rather than for the enclosing masonry fireplace. For example, Regency lists baffles, air tubes and firebricks as distinct items in the maintenance schedule for certain inserts. A drawing can establish how many pieces belong in an assembly and what supports them. It cannot establish remotely that the supports on your own appliance are intact or a board can be reused.
Decide who will put the appliance back in service
Tell the service provider if the discovery came immediately after sweeping so the previously accessed route is understood. Ask what condition was found above the firebox, whether any part must be replaced and how the assembly will be checked against the specific model before use. Leave any cleaning and disassembly to the appropriate provider while the origin of the fragment is uncertain.