Compatibility –Our RP46074 cartridge assembly replacement for Monitor rough-in valves (R10000, R1100, R1800, R2200, etc.) and most single-handle 13/14 series tub/shower faucets Kit. (Excludes 1300/1400 series) Pressure-Balanced Performance – Maintains water temperature within ±3.6°F (±2°C), preventing sudden hot/cold surges for safer showers. Durable Construction...