Kenyon B70551 21 Inch Frontier 240V Electric Out Door Grill. Frontier 240V Built in Electric Grill with IntelliKEN Touch Controls. A sleek built-in grill perfect for cooking up a storm in your kitchen or taking your culinary adventures to the great outdoors on your balcony. The Frontier Grill has an angled double-lined lid that locks in the heat while keeping the exterior of the lid from becoming searing hot. The 120V (B70550) comes with a 6’ GFCI protected US plug while the 240V (B70551) comes with a hardwire connection. Automatic shut-off at 60 or 90 minutes depending on the heat setting