Pump Head, Self-Priming Flexible Impeller, Inlet/Outlet (In.) 3/4, Body Material Bronze, GPM of Water @ 5 Ft. of Head 18, GPM of Water @ 10 Ft. of Head 16, GPM of Water @ 20 Ft. of Head 12, GPM of Water @ 30 Ft. of Head 9, GPM of Water @ 40 Ft. of Head 6, GPM of Water @ 50 Ft. of Head 3, GPM of Water @ 60 Ft. of Head 1, Epichlorohydrin Impeller, GPH of Water @ 1 Ft. of Head 1200, GPH of Water @ 5 Total Ft. of Head 1080, GPH of Water @ 10 Ft. of Head 960, GPH of Water @ 20 Ft. of Head 720