The Afwall Millennium Back Spud Elongated Toilet Bowl is designed for use with 1.1 gpf – 1.6 gpf flush valves. Created for High Efficiency, the toilet achieves a MaP score of 1,000 grams for both 1.1 through 1.6 gpf providing high performance while saving water. With a back spud design, this toilet is water efficient product for commercial installations.  Low Consumption. Meets definition of HET (High Efficiency Toilet) when used with a high efficiency flush valve (1.1 gpf -1.6 gpf or 1.28/1.1 gpf dual flush). Condensation channel. 10" x 12" water surface area. 100% factory flush tested System. MaP Score: 1,000 grams of miso @ 1.1 gpf to 1.6 gpf when used with an American Standard flush valve. Maximum Performance (MaP) testing performed by IAPMO R&T Lab. MaP Report conducted by Veritec Consulting, Inc. and Koeller and Company. Recommended working pressure– between 25 psi at valve when flushing and 80 psi staticFixture only, less seat, bolt caps, and flushometer valve. Compliance Certifications - Meets or Exceeds the Following Specifications:- ASME A112.19.2/CSA B45.1 for Vitreous China Fixtures- This product is not recommended for bariatric use.