Lot of 10, Thermocool Truncated Ball Type AC fan. Specification : 120v AC input, 0.4A rating, 38W, 2600RPM, Noise: 54-59dB, Airflow:176-198 CFM, Size: 172mmL x 150mmH x 51mmW (6.77"L x 5.9"H x 2"W). Does not include power cords, these are sold separately.