Comments about RadonAway 6" X 4" Flexible PVC Coupling for 6" Fan Mounting - White:

These are shorter then the ones they where going to replace. I did not realize there were two sizes. I was not about to use these so the tech installed the old ones.

if you are using these to replace existing one make sure the original are of the same length. Also, I bought them for exterior use because the originals are all stained and thought I would replace them. As stated above they are shorter and could not be used. Can I return them?

Comments about RadonAway 6" X 4" Flexible PVC Coupling for 6" Fan Mounting - White:

Used it for radon mitigation system that comprises RadonAway fan with 6" dia inle/outlet collar. If these 6"x4" couplings are really made by RadonAway (as claimed on oyur website), then I do not understand why the fit to the fan is extremely tight while fit to 4" PVC pipe is extremely loose. Eventually the couplings were connected as originally designed, but not without extra effort.

Comments about RadonAway 6" X 4" Flexible PVC Coupling for 6" Fan Mounting - White:

Item was exactly as needed. This was the only place it could be found. Great price and fast shipping!