The Viper 1.28gpf Tank from Gerber Plumbing Fixtures is engineered for high efficiency and performance. With a 12" rough-in, this tank is designed for compact elongated bowls, making it perfect for space-saving installations. It features a sleek white finish that complements modern bathrooms. The tank operates at a low flush rate of 1.28 gallons per flush, promoting water conservation without sacrificing performance. Constructed to meet ANSI standards, it ensures reliability and durability. Ideal for both new installations and replacements, the Viper tank is a smart choice for eco-conscious consumers.