KOHLER Highline Classic 12in. Rough In 2-Piece 1.0 GFP Single Flush Elongated Chair Height Toilet in White, Seat Not IncludedKOHLER Highline 1. 0 GPF Chair Height Toilet The KOHLER Highline Classic Toilet combines efficient water usage with a powerful pressure assist flush, saving thousands of gallons annually. Its chair height design offers comfort, while the elegant vitreous china finish complements any bathroom style. Key Features: Pressure Assist Flush: Delivers robust performance with 1. 0 gallon per flush, reducing water usage by over 30%. Chair Height Design: ADA