The ERK-10FT-FC is a thermostatically controlled integrated fan top that ships fully assembled. The fan top. Includes a 10-inch fan, fan guards, and a proportional speed fan controller that increases fan life, reduces noise, saves energy, and reduces dust build-up. The ERK-10FT-FC is ETL listed in the US and Canada, ensuring that it meets the highest safety standards. The pre-assembled fan top. Includes a 10-inch fan and proportional speed controller that only runs when needed, saving energy, reducing noise, and minimizing maintenance. The ERK-10FT-FC is compatible with WMRK, ERK, and ERK-KD (35 space and higher), and SCRK racks. The fan top is constructed of high-quality steel with a black finish, ensuring durability and longevity. This thermostatically controlled fan top is a reliable and effective solution for those who need to keep their equipment cool and running smoothly.