This unit differs from the MJA105 in that it is capable of drawing water either through the hull or by overboard hose (via adaptors). This unit also allows you to connect a deckwash pump (for extra capacity) via a 1/2" threaded inlet. (Capped off with a plug if you don't need it.) Another major feature of this unit is the rotatable (through 360°) discharge nozzle head to maximise installation flexibility. Supplied with 2 x glass-filled hose-barb fittings - one straight, one right angle. Pump capacity 500GPH (1890LPH). Transom or through-deck mount.