Imperial Home BBQ Charcoal Grill The Imperial Home BBQ Charcoal Grill is a very useful grill. The cooking area is 18 in. diameter so that you can grill loads of food together. The venting system allows to clear off the ash from the grill and does not require you to use hands. Its heavy gauge stamped steel body provides it a long shelf life. Other features include removable legs and ash tray.