Pleasant Hearth 1000-sq ft Dual-Burner Vent-Free Natural Gas or Liquid Propane Gas Stove (Sold Separately) in the Gas Stoves department at Lowes.com
Avoid Unvented Gas Heaters | BuildingGreen
30000 BTU Vent Free Blue Flame Natural Gas Heater - Walmart.com
HearthSense 30,000 BTU, Ventless Dual Fuel Blue Flame Heater With Base and Blower, T-Stat Control 140324 - The Home Depot
Bluegrass Living Propane Gas Vent Free Blue Flame Gas Space Heater With Blower and Base Feet - 30,000 BTU, T-Stat Control - Model# B30TPB-BB - Factory Buys Direct