I bought this lot of fans last summer and have thus since given up on the project. I had to buy the entire lot and this is what I have left.
I have eighteen of these muffin fans. These are 60mm square x 25mm thick, Run on 12vdc and draw .23 amps. They put out 24cfm and have 4600rpm. Rated at 36db and weigh just under 2.5 oz. They have three wires. Two for the voltage and one is an output tachometer signal - these were made for something that had to sense the fan was running. The red wire is positive, black is negative, and white is the tach output. I do not want to get into multiple shipments so these are for sale as one lot. I would like $40 OBO for the batch. Paypal prefered but MO okay too.