Every unit is individually assembled and tested by hand in the USA. Features Mounting base configuration matches the bolt pattern used on most competitive toilets. Our robust doubleaction piston pump is 66% larger than competitive models making its use quick, easy and efficient. Proprietary full size 1-1/2" joker valve is specially designed to maintain pump performance Effortless pumping! Powerful telescopic lever style handle makes pumping a breeze, even in the mostchallenging plumbing installations No more slamming seats! Soft close seat prevents annoying seat slamming and includes a unique feature thatlocks the seat in place while boat is rocking Superior double action piston pump takes fewer strokes per use Economical, trouble-free quiet operation Powerful flushing action Reversible pump mounting for choice of right or left-hand installation and operation Air vent reduces back pressure Double-action piston pump draws new flush water as it discharges wastewater Specifications Maximum Lift: 4' (1.2M) Maximum Discharge Loop Height: 15' (4.6M) Inlet Port Size: 3/4" Discharge Port Size: 1-1/2" Weight: 31.60 lbs