Together with the Weber baby Q Trivet the convection tray transforms your Weber baby Q from cooking in barbecue mode to oven mode in seconds. The disposable trays are engineered with vents designed to circulate the heat above, below and all around the food. No more fiddling with foil, no fuss, just great food. Sit your trivet inside the disposable convection tray, pop the food in and close the lid. Your Weber baby Q has now become a convection oven that’s cooking perfectly.