RP19804 cartridge for 1300 & 1400 series tub / shower valves (fits select Monitor valve before 2007, doesn' fit the MultiChoice Universal Valves (2007~ ). Make your shower rough-in style, and the cartridge. For in Monitor 1300 & 1400 single-handle tub / shower trim kits, single-function only temperature control with pressure balance. This RP19804 shower cartridge with pressure balance design keeps the water temperature within a safe +/- 3.6 F ( +/- 2 C), helps to you from sudden changes in hot or cold water pressure. Easy to limit the maximum of hot water to prevent overheating. Manufactured with a quality, durable plastic constructions provides strength and reliability. Colour: white + blue Material: plastic Package Contents: 1 x Valve Cartridge Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.