This is my fan it is not a computer fan but a smaller fan with the gard cut and I put it in some pvc pipe that ii found at home depot. glue it on and BAM I had a fan. I made it that big so i could have as much air flow as possiable, and i plan to put dryer sheets over the outside of intake and outtake. this is my first time dont know if it realy works only on day3.