The 3/8" Dry Well Thermowell is a reliable solution for protecting and securing temperature sensors in your spa control systems. Designed to accommodate ⅜” sensors, this thermowell provides a protective housing that isolates the sensor from direct water exposure, ensuring accurate temperature readings at all times. Made from durable black thermoplastic, it offers long-lasting performance in demanding spa environments. Compatible with Balboa, Gecko, Hydro-Quip, and other spa systems, it is an essential component for maintaining precise temperature control and optimizing spa system functionality.