This RP46074 shower cartridge was designed for using with Delta Multi-Choice Universal valve body rough-in R10000, R1100, R1800, R2200 etc, replacement cartridge for single-handle Delta Monitor 13-14 series bathtub and shower faucet. NOTE: Only fit for 13/14 Series Delta tub showers ! (Not Applicable for 1300/1400 series tub shower.) This faucet cartridge for Delta designed with high-quality plastic and brass, effective and durable. It fits all Delta single-handle Monitor 13/14 Series tub/showers (single-handle single-function Delta trim kit), provides single-function pressure-balance temperature control only which keeps water temperature within a safe range. Made of high quality plastic construction for durability. This RP46074 shower cartridge was designed for using with Delta Multi-Choice Universal valve body rough-in R10000, R1100, R1800, R2200 etc, replacement cartridge for single-handle Delta Monitor 13-14 series bathtub and shower faucet. NOTE: Only fit for 13/14 Series Delta tub showers ! (Not Applicable for 1300/1400 series tub shower.)