I bought these for my chicken coop. The temperature is currently 0 for a high during the day and a double digit minus at night, which does not include a cold wind. I was suspicious of heat lamps because of the fire hazard. I've heard a lot of horror stories. Also, I don't think my chickens need a tan. This bulb is enough to keep the chicken coop at about 10 degrees and they seem to be fine with that.
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