A two piece print which is glued together to be a CPU fan duct for a Novena board. The fan is also glued to the assembly, and is oriented to blow downwards. In the 2nd last picture it shows a 25mmx25mmx10mm fan, but it is meant to use a 25x25x6.9mm fan which would fit inside of a Novena case. The final picture shows it with the 6.9mm fan, glued together, and bolted in place. using the 6.9mm fan it sticks up 2mm above the height of the Ethernet ports, but is still shorter than the GPBB pins. You need to remove and rotate the stock heatsink, I found removal easy to do with a twisting motion. This is the 25mmx25mmx6mm fan I used.: http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=170037193&uq=635641349248190005 There are two pieces in the print. The pieces and a 25mmx25mmx6.9mm fan are all glued together into a single assembly as shown in the photos. The print includes some tabs to help hold the heatsink in place. In order to make sure everything lines up install the heatsink onto the tabs on the fan duct, then connect the entire assembly to the motherboard with a dab of fresh thermal compound on your CPU. Note the screw holes for the fan are used for alignment during assembly, but I removed the screws once my glue was set as they interfere with the SD card holder, and make the assembly taller than desired. The fan should be oriented to blow air downwards into the duct.