Gerber leads the pack in quality,style and total commitment to serving the plumbing professional. With constant renewal through innovative new products, they have proven themselves to be one of the most respected brands in the plumbing industry. Avalanche and Viper have been engineered and rigorously tested by our research and development team. These models, featuring Gerber's exclusive HP2 and XP3 flushing technologies, push the boundaries to set higher standards for flushing performance within their respective categories. Together with Ultra Flush and Maxwell, Gerber's complete line of toilets provides plumbing professionals and consumers with an industry-leading range of choices in performance, style and price.