On the bottom of the grill is an easy removable ash tray that can be removed and dumped.
For the portable grill it is 17.5 by 10 inches.
Yes, all you have to do is spread Hickory, Maple, Mesquite, or whatever wood chips on top of the coal. You can have smoked apple, alder, or cherry smoked BBQ ribs in matter of minutes. After spreading the wet wood chips on top of the hot coal, wait a little until the heavy smoke turns to light bluish smoke, and put your ribs on the grill. Put the lid on with the open vent and Wa-llah! Great Mesquite Smoked Ribs!
According to the engineers for many years. We use an extreme heat material that we have vigorously tested. The results was beyond our expectation without any breakage. We have warranty on all parts and defects on all our grills.