Model 2290 heating tips are capable of producing more than 1 million BTU per hour using low-cost, readily available, safe, alternate fuels. They are available in five sizes. Each size is adjustable over a broad heat range. -- Heavy-Duty heating tips for use with alternate fuels -- Produces more than 1 million BTUs per hour using alternate fuels -- Adjustable over a broad heat range -- -- 1 Year Warranty