Eco-Flo ECFECD33W 1/3 HP CAST IRON SUMP PUMP W/ WIDE ANGLE SWITCH - FULLY SUBMERSIBLE - 1-1/2" FNPT DISCHARGE - NON-CLOGGING VORTEX IMPELLER PASSES 1/2" SOLIDS - 8' POWER CORD - UP TO 3300 GPH - MAXIMUM VERTICAL LIFT OF 31', specially designed to operate in basins with an 18" inch diameter. This pump features a non-clogging vortex thermoplastic impeller, it has a heavy duty cast iron construction, it has built in overload motor protection, it handles 1/2" solids, and it has a wide angle switch.