Mushroom Tent Fan Penetration

thingiverse

This is a fan penetration for adding a 40mm computer fan to a standard greenhouse tent to add ventilation for mushroom growing. I used a Noctura fan, but I most 40mm fans should work. You will need to tap the 3mm mounting screw holes, the rest are M4 machine screws with a nut. I put the mounting plates on the tent and used an ice pick to punch one hole then put one M4 bolt in and tightened it. Then proceeded to punch the rest of the holes and add bolts. Once that is done cut the center hole out of the tent. The 90 degree nozzle can be added if desired.