The TOTO USA Eco Dartmouth Tank model ST753EN#12 is engineered for high efficiency with a flush rate of 1.28 gallons per flush (GPF). This tank is designed to fit seamlessly with compatible toilet bowls, ensuring optimal performance and water savings. Constructed from durable materials, it meets industry standards for quality and reliability. The Eco Dartmouth Tank is perfect for eco-conscious consumers looking to reduce water usage without sacrificing performance. Its sleek design and reliable functionality make it an excellent choice for modern bathrooms.