Add luxury to your bathroom with this TOTO Aquia IV Close Coupled Toilet with Elongated Bowl. Seat Not Included. TOTO Soft Close Cotton Seat: $70.00. With a 1.28 GPF (Gallon Per Flush), you’ll love this high efficiency toilet for your bathroom. This technologically-advanced system is saving you 35% more water than the standard 1.6 GPF! The Dynamax Tornado Flush utilizes 360 cleaning power to reach every part of the bowl. Easier to clean, easier on you! We have a limited supply so get yours today at Builder Supply Outlet.