H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 236798_H2Optimum_SiloFront_606DA001.020_0001_Jan2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 236800_H2Optimum_SiloRight_606DA001.020_0001_Jan2024_CDNwebp.webp

[606DA001.020] H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring - White

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 244845_H2Optimum_SiloRight_606DA001.020__738519-100.0070A_0001_April2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 244846_H2Optimum_SiloRight_606DA001.020_0001_APRIL2024_CDNwebp.webp

Transitional Slow-Close Round-Front Toilet Seat // WHITE // 245419_H2Optimum_SiloLeft_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

Transitional Slow-Close Round-Front Toilet Seat // WHITE // 245420_H2Optimum_SiloFront_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

Transitional Slow-Close Round-Front Toilet Seat // WHITE // 245422_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020__738519-100.0070A_0001_APRIL2024_CDNwebp.webp

Transitional Slow-Close Round-Front Toilet Seat // WHITE // 245423_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

Transitional Slow-Close Round-Front Toilet Seat // WHITE // 245428_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 248723_H2Option_EnvironmentCloseUp_606DA001.020_8337230.002_0002_MARCH2024_CDNwebp.webp

[T105901.GN0] Studio® S Bathtub Faucet With Lever Handles and Personal Shower for Flash® Rough-In Valve - Brushed Cool Sunrise

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 246267_H2Optimum_Infographic_606DA001_0001_JUN2024_CDNwebp.webp

[204AA105.020] Edgemere® Two-Piece 1.28 gpf/4.8 Lpf Chair-Height Elongated Right-Hand Trip Lever Toilet Less Seat - White

[250BB104.020] Colony®3 Two-Piece 1.28 gpf/4.8 Lpf Chair-Height Round Front 10-Inch Rough Toilet Less Seat - White

[211BA704.020] Champion® PRO Two-Piece 1.28 gpf/4.8 Lpf Chair Height Round Front Toilet With Matte Black Trip Lever Less Seat - White

[2828A809.020] Aspirations EcoStrength Skirted One-Piece 0.80 gpf/3.0 Lpf Chair Height Elongated Toilet With Seat - White

[215FA004.020] Cadet® PRO Two-Piece 1.6 gpf/6.0 Lpf Compact Chair Height Elongated Toilet Less Seat - White

Compare

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 236804_H2Optimum_SiloTop_606DA001.020_0001_Jan2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 245419_H2Optimum_SiloLeft_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 245420_H2Optimum_SiloFront_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 245422_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020__738519-100.0070A_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 245423_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 245428_H2Optimum_SiloRight_606DA001.020_3708216.020_4133A114.020_5503B00B.020_0001_APRIL2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 176856_BrandStory_Infographic_Bathroom_0001_JUL2025_1_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 236793_H2Optimum__EnvironmentCloseUp_606DA001.020_0001_Jan2024_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 176854_Trapway2in_Infographic_Generic_0001_JUL2023_1_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 176857_PowerWash_Infographic_Generic_0001_JUL2023_0_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 187734_EverClean_Infographic_ToiletOnly_0001_MAR2025_2_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 187735_SlowClose_Infographic_Generic_0001_OCT2023_0_CDNwebp.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 249896_1Toilet_Infographic_Generic_0001_NOV2024_1_CDNwebp_8d3f3078-9977-408c-a57b-159ce1fb2dde.webp

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring // WHITE // 42871_KnowYourSpace_Infographic_Generic_0001_MAR2024_1_CDNwebp.webp

Discontinued

H2Option/H2Optimum / Other Dual Flush

H2Optimum® Two-Piece 1.1 gpf/4.2 Lpf Standard Height Round Front Toilet With Seat and Wax Ring

Model: 606DA001.020

Powerful 1.1gpf/4.2Lpf performance: Effectively clears the bowl
Impressive water savings: Lowest consumption gravity flush toilet
EverClean® antimicrobial surface: Protects against bacteria

Finish: White

$225.55

~~List price $347.00~~

View full details

Complete toilet includes: Slow-close seat, chrome trip lever, color-matched bolt caps, and wax ring
Clears the bowl with just 1.1gpf/4.2Lpf: This ultra-high efficiency toilet is the lowest water-consuming gravity flush toilet available for impressive water savings, the highest MaP (Maximum Performance) score of 1,000 grams, and is WaterSense® certified
Antimicrobial surface: EverClean® protects against mold, mildew, odor- and stain-causing bacteria
Every flush cleans the bowl: A forceful rush of water from the PowerWash® rim helps to scrub the bowl with every flush

The H2Optimum Two-Piece Round Front Toilet from American Standard is the highest water-saving gravity flush toilet available. The H2Optimum delivers impressive flushing performance using 1.1 gallons per flush/4.2Lpf. This space-saving, round-front toilet is ideal for smaller bathrooms where space may be limited.

Resource

Spec Sheet Installation Guide