Was having a hard time pulling a vacuum into the grow room had smell escaping. I didn't have a 6-in fan but I had two 4-in fans. you guys can figure out the rest this tea enabled me to put the two 4-in fans together and to get the cubic feet per minute moving that I needed to be able to pull the vacuum. I believe these would be sturdy enough for dust collection. Just remember do not tighten the clamps up with a drill using these plastic products.