DirectFlush. washdown model. Sanitary ceramics. this product works with industry standard in-wall carrier/tank systems such as those manufactured by Viega, Geberit and TOTO. Please refer to their respective compatibility charts.. incl. "Supra-Fix 3.0" mounting system. EN 997. Please order toilet seat separately.. This wall-mounted toilet is made of vitreous china. The wall-mounted toilet is 22" (560mm) x 14 5/8" (370mm). The product has a concealed trapway and a D-shape bowl. The product is with ceramic plus. The product has a water use of 1.6/0.8. gpf (6/3 lpf). The wall-mounted toilet is Villeroy & Boch model 5614UR. ADA compliant, EPA - Watersense, meets and exceeds ASME A112.19.2/CSA B45.1 ASME A112.19.14, Certifications: IAPMO(cUPC), EPA Watersense, City of Los Angeles and others, Certifications: IAPMO(cUPC), State of Massachusetts, Code Compliance: UPC, IPC, NSPC, NPC Canada and others. washdown model. concealed trapway. D-shape bowl. one year limited warranty. min Water pressure: 8 psi. water surface: 4" x 5" (100 x 130 mm). trap diameter: 2" (50mm). trap seal: 2 3/8" (60mm). minimum rough-in: 7" (180 mm) rough-in. rear outlet