For commercial/industrial coolers rated from 12,000 to 21,000 cfm (cubic feet per minute). Motor housing made from flame-retardant plastic. Auto-reset thermal overload protection. Built-in screened inlet in the base. "Low level" design, meaning that even if the water level in the cooler drops to as low as 1/2" it will still pump water without drawing air. Removable baseplate for easy removal of debris that might clog the intake. Corrosion resistant shaft. Molded 3 prong plug. Grounded round SJT (stranded Junior Thermoplastic) power cord. Extra heavy-duty motor. Fits all coolers. 1 year warranty.