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EMPIRE RH25/RH35 Vented Console Gas Heater – US Fireplace Store
Amazon.com: 30,000 BTU Natural Gas/Propane Wall Heater for Indoor Use - Dual Fuel, Vent-Free : Home & Kitchen
Dyna-Glo 18000-BTU Wall-Mount Indoor Liquid Propane Vent-Free Radiant Heater in the Gas Space Heaters department at Lowes.com
Martin Direct Vent Propane Wall Furnace Heater for Indoor Use with Built In Thermostat and Glass Panel, 11,000 BTU | Propane wall heaters, Wall mounted heater, Propane heater