A vertical grill comprises a back chimney within the housing having an inlet and an outlet. The inlet is in the form of one or more first openings in the back frame member, and the outlet being a second opening which is higher than the inlet. A first air intake located in at least one of the grill's panels. A removable tray module comprises a slide positioned at an incline between the front and back sides, configured to direct fats and break away solids to the front side of the tray. At least one channel is covered by the slide and configured for air flow. An external receptacle is positioned at the front side of the tray, wherein the slide leads into the receptacle so that fats and break away solids may be channeled into the external receptacle after traveling downwards along the incline of the slide.