Is it okay to sleep with a portable gas heater on in my bedroom overnight if I leave my windows open? - Quora
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BLUEGRASS LIVING Natural Gas Vent Free Blue Flame Gas Space Heater With Blower and Base Feet - 20,000 BTU 200087 - The Home Depot
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Amazon.com: Mr. Heater 30,000 BTU Propane Radiant Vent Free Heater #MHVFR30TBLP : Tools & Home Improvement
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