The Liberty Pump SumpBox SBX280 is a 1/2HP, fully assembled, professional groundwater protection sump pump system with a 41 gallon-basin. It has a max shut-off head of 37', a maximum flow rate of 56 GPM at 10' and can handle 3/4" solids. The Liberty Pump SumpBox SBX280 sump pump system has a discharge of 1-1/2" female NPT and is equipped with a safety overflow feature. This sumpbox sump pump system features a pump cover securely bolted with stainless steel fasteners and an easy to service float switch, located in holders under the access cover. The Liberty SBX280 SumpBox sump pump system is designed for new home construction and requires no tools to open.