b'MODEL CONSTRUCTION HP VOLTS AMPS DISCHARGE FLOAT SWITCH STYLE MIN. PIT DIAMETER450-Series451 Poly and Finned Alum. 1/2 115 7.5 1-1/2" Wide-angle (integral float switch) 14"453 Poly and Finned Alum. 1/2 115 7.5 1-1/2" Wide-angle (piggyback plug) 14"457Poly and Finned Alum. 1/2 115 7.5 1-1/2" VMF Vertical Magnetic Float 10"280-Series281 Cast Iron 1/2 115 8.5 1-1/2" Wide-angle (integral float switch) 14"283 Cast Iron 1/2 115 8.5 1-1/2" Wide-angle (piggyback plug) 14"287 Cast Iron 1/2 115 8.5 1-1/2" VMF Vertical Magnetic Float 10"290-Series291 Cast Iron 3/4 115 10.4 1-1/2" Wide-angle (integral float switch) 14"293 Cast Iron 3/4 115 10.4 1-1/2" Wide-angle (piggyback plug) 14"297 Cast Iron 3/4 115 10.4 1-1/2" VMF Vertical Magnetic Float 10"Many pump options available including manual models (no float switch), longer cord lengths, and 230V models.Consult the website or Liberty Pumps for complete product specifications.www.LibertyPumps.com'