120mm fan Fume extractor mod for ikea tertial work lamp

These are parts for a fume extractor mod of the ikea tertial work lamp. There are two versions, I had previously modded my lamp and used a piece of aluminum to hold the fan, thus I had flatten the connecting bracket. You will find the flatten version as well as the curved version. With a brand new lamp just remove lamp and attach the round version. Also included is a bigger knob as original is too small and hard to tight with the added extra weight. To attached the fan I used 4x 25mm M5 screws and the original screws for the lamp connect bracket. The filer is a square with 135mm sides.