The basic builder’s/water wheel fan is the most common bathroom exhaust fan. It is used in powder rooms and regular size bathrooms 5′ x 8′ (40 square feet). It is easy to clean and has left or right rotation capabilities. Furthermore, it can also be modified to fit 99% of all existing bath exhaust fans. It features a 3 sonnes noise level, a power usage of approximately 60-90 watts, and is designed to last 30,000 hours. It can remove 50 cubic feet of unwanted air per minute, and comes with a 1-year warranty