The Cadco Line Chef Full Size Countertop Convection Oven (XAF-193) is an NSF certified, stainless steel convection oven that goes on the countertop to maximize kitchen space. The stainless steel body makes this oven durable and easy to clean, and this oven comes with four shelves for fantastic storage capacity. Simple controls make this oven easy to use, and a 60-minute timer enables precision cooking. Cadco - XAF-193 - Line Chef Full Size Countertop Convection Oven has an advanced airflow system that ensures food is cooked thoroughly and consistently.
the distance between the legs is not a measurement that the manufacturer has access to. I would be conservative though and say that it won't safely it on a 30" wide counter.