Rule 3700Non-Automatic 24vHeavy duty construction for both commercial and pleasure boat use; known for trouble free operation and reliability. 1-1/2″ (38mm) discharge outlet.WARNING: This product can expose you to chemicals including FORMALDEHYDE (GAS) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov. Specifications:Gallons Per Hour: 3700 GPHOperation: Non-AutomaticOutlet Size: 1-1/2″Volts: 24vType: ElectricBox Dimensions: 7″H x 8″W x 11″L WT: 5.9 lbsUPC: 042237083517Owner’s Manual (pdf)