Review on SparkFun Blower Squirrel Cage 12V by Christopher Sullivan

Moves large volumes of air in a compact package. Very quiet. Exactly what I needed. I used 1-1/4" ID corrugated flexible hose (like a vacuum hose) to slip it over the fan outlet and pushed hot air behind the refrigerator cabinet in my RV through the 1-1/4" diameter outlet to blow out. 2 inches and that's all I had. space for the hose. Works perfectly. I connected a backlit switch to remind me it's on. Otherwise it would have been so quiet, I wouldn't have known.