Rainbow Lifegard Quiet One Aquarium Pump 4000 (Original Series) 951 gph, 42 watts, UL listed 1" MPT outlet, 1" MPT intake Quiet operation for submersible or dry application Innovative "cooling chambers" provide air-cooling during dry use and water cooling in wet applications High quality, corrosion resistant ceramic bearings help ensure quiet operation and longer life. Warranty: 3 years from date of purchase