Industrial-grade cast aluminum de-icer transforms any wild bird birdbath into an ice-free sanctuary. Thermostatically controlled unit is safe for all birdbaths. Automatically turns on at 35°F and withstands weather to -20°F. Durable, efficient design functions only when needed to save you money. Measures 4-1/2" diameter x 5" long. 150 watts. Manufacturer's three-year limited warranty. UL-Listed.
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