Mr. Heater 30000-BTU Floor-Mount Indoor/Outdoor Liquid Propane Convection Heater in the Gas Space Heaters department at Lowes.com
Amazon.com: Mr. Heater 30,000 BTU Natural Gas Blue Flame Vent Free Heater : Home & Kitchen
Bluegrass Living Reconditioned Natural Gas Vent Free Infrared Gas Space Heater With Blower and Base Feet - 30,000 BTU, T-Stat Control - Model# B30TNIR-BB-R - Factory Buys Direct