tanks and waterers energy-free waterers minimum 10 head minimum 10 head constructed from 100% polyethylene material rounded corners to handle abuse by livestock while ensuring livestock safety corrosion-free products to provide many years of trouble-free operation temperature is raised to prevent freezing clean cool drinking water will lower respiration rates and body temperatures; increase feed intake and milk yield time saver - automatic water refill algae growth reduced on water which aids against west nile virus year-round ease of usage product will not crack or rust in extreme weather conditions bolt-down method keeps the waterer in desired location less everyday maintenance csa certified minimum 15 head item # height description single-door energy free waterer dual-door energy free waterer four-door energy free waterer width length capacity multi-use utility de-icer water tank float valve constructed of cast aluminum for ultimate efficiency and performance thermostatically controlled to operate only when necessary designed for multiple uses around home and farm safe in plastic tanks used in 25 and 50 gallon bird baths depending on unit model watt units with 6' cord eliminates the need for manual water fills or expensive automatic livestock watering systems attach to existing water tanks to allow automatic water fill when levels are low operates with gravity flow or pressures up to 70 psi versatile for most any water tank polyethylene features replaceable water polyethylene shut-off orifice attaches to standard garden hose wtfv height width length description multi-use utility de-icer 250 watt multi-use utility de-icer 500 watt water tank float valve item # wtfv tarter farm & ranch product guide