Mrheater MH540T Openbox Product Review | Excellent Heater, Saved my tropical trees in my Greenhouse

MrHeater mh540t propane outdoor heater open box product review. I bought 2 of these to heat up my greenhouse. The artic blast all the way to south louisiana, we had 4 days in the 20s, these two heaters saved my tropical plants in my greenhouse.
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