Other: 30mm x 30mm x 7mm. Brushless DC Fans feature higher speeds, longer life and less maintenance. Available in a variety of sizes to replace or upgrade DC fans in smaller electronic devices like your HDD rack, or PC notebook.
These fans are ok for small driver cooling. But I replaced my old dell projector fan which was thinner than this one. And it couldn't keep up. Same specs otherwise. So figure maybe 5 watts of thermal cooling. Above that it's a gamble.