TPI HF684TC Portable Heater - Fan forced, 4000W, 240V, 680 Series | ISC Sales
Amazon.com: Gas Patio Heater with Wheels,48,000 BTU of outdoor heaters for patio propane for Commercial and Household Use,Stainless Steel Outdoor Propane Heater,with CSA Certified for Garden (195 sq ft) : Patio, Lawn