The Char-Broil G438-0100-W1B Gas Grill Firebox houses the grill’s burners and provides the enclosed space needed for heat distribution during cooking. This metal assembly supports the burners and helps direct heat toward the cooking grates while containing the flame and combustion area. Installed beneath the cooking surface, it forms the main heating chamber and supports the proper pl... https://www.hnkparts.com/char-broil-g438-0100-w1b-gas-grill-firebox-73532/4-G438-0100-W1B.html