For tanks up to 40 Gallons. 12" X 20" Panel, 13.5 VDC. Prevent holding tanks from freezing, even in negative temperatures. Power on when the outside temperature is just above freezing and falling, fluids must be present when in use. Has built-in sensor to cycle heater for power savings, and maintain tank contents between 44degreeF and 64degreeF. Power off when the outside temperature rises to remain above freezing. Peel-n-Stick install. Must be wired thru on/off switch (not included). Made in the USA.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov