Carrier and concealed tank with actuator rush panel or gas push button for wash-down wall-hung toilets. System shall within lowest 31/2 '' -LRB- 90 mm -RRB- framing wall or Plumbing chase, with wood construction or steel framing members placed 193/4 '' -LRB- 500 mm -RRB- apart. Framing members should be of supporting a 880 pound -LRB- 400 kg -RRB- load without damage to the wall. Water supply shall flow diameter no smaller than 1/2 '' -LRB- 13 mm -RRB- copper tube, and a lowest flow pressure of 2 psi -LRB- 0.01 mpa -RRB-. the toilet bowl be a common fraction party listed low-consumption 1.6 gph -LRB- 6 lpf -RRB- or 1.6 / 0.8 gph -LRB- 6/3 lpf -RRB- dual-flush 2-hole wall-hung type. The carrier frame shall be for bowl rim heights from 15 '' to 19 '' -LRB- 381 to 483 mm -RRB-. actuator rush panels shall be cast Zinc, molded plastic or fabricated unsullied steel and plated to preserve material integrity. All components shall be with applicative Codes and product standards.