Compatibility: Fits for Elkay Water Cooler and Halsey Taylor Water Cooler Part Numbers: Replaces 35839C and 98773C. Note: 98773C is an Elkay OE number with two additional screws Package Content: Includes 1 cold control thermostat Installation: Requires professional tools and skills. Installation may be challenging but manageable Quality & Energy Saving: Made of high-quality materials Compatibility: Fits for Elkay Water Cooler and Halsey Taylor Water Cooler