Jenn Air Grill - Gas Grill Reviews Jenn Airbr br The Jenn-Air gas barbecue grill currently sold at Lowe's looks like a sturdy, well-built piece of equipment. It comes in three sizes for its outdoor models and is offered in four built-in indoor models. At 45,000, 48,000, and 60,000 BTUs in the outdoor grills and 48,000, 68,000, and 98,000 BTUS for indoor models, there seems to be a Jenn-Air gas barbecue grill to suit everyone.br br Lowe's Jenn-Air gas barbecue grill boasts stainless steel construction, solid-cast brass burners, and generously sized cooking areas -- things to consider when you're buying a grill with longevity in mind. But for those goodies, be prepared to spend anywhere from $649 to more than $1,000 for your Lowe's Jenn-Air gas barbecue grill.