Made of durable solid steel. the Japanese-designed Fireplace Coal Bed S turns the Pack & Carry S Fireplace into a charcoal grill. The Coal Bed elevates coals. briquettes or wood for an even heat source when cooking. To use. insert the Coal Bed into the Pack & Carry Fireplace and place coals or briquettes on top. Pair the Fireplace Coal Bed S with the Pack & Carry S Fireplace.