Yorkville Vitreous China Toilet Tank Only with Left Mounted Trip Lever, 1.1 gpf American Standard 4142.100 Features: High Efficiency Toilet (HET), ultra-low consumption (1.1 gpf / 4.2 Lpf), certified in EPA WaterSense Program This item is WaterSense Certified, and meets all EPA criteria American Standard 4142.100 Nominal Dimensions: 9 D x 20.5 W x 14.25 H (228.6mm D x 520.7mm W x 361.95mm H) American Standard truly is an American Brand to the core.