SUMP PUMPS 1/2 HP Submersible Sump Pump Model R5S-1, Part No. 24681D500 Ideal for heavy duty use in basements or light commercial applications needing frequent water drainage 1-1/2" discharge 115 volt oil-filled motor for superior heat dissipation Built-in overload protection Rugged cast iron housing with corrosion-resistant cover and base High performance with lifts to 24' Maximum flow of 53 GPM at 10' lift Replaces most pedestal and submersible sump pumps in basins as small as 14" Listed by Underwriters Laboratories