We
presently offer just one size of brushless DC fan. These are plastic
fans, housed in a plastic frame, with dimensions as shown, and with
screw mounting holes in the corners.. Fans are designed to operate
off 12 VDC. They will also function at 9 VDC. Fans are 90 mm x 90
mm x 25 mm thick, and come with red and black wire leads, 300 mm
in length. These fans are not bipolar – they operate only
if positive pole of power source is connected to the red lead. These
fans are almost noiseless.
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