HearthRite HRW17T 17K BTU Infrared/Radiant Vent Free Gas Heater LP
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 - Walmart.com
Williams™ 22,000 BTU Liquid Propane Direct-Vent Forced Air Wall Heater at Menards®
Mr. Heater Propane Vent-Free Blue Flame Wall Heater — 30,000 BTU, Model# MHVFB30LPT | Northern Tool