Product review (5 stars): Finally -- a properly connected venting system...
This worked as advertised!

I don't know why dryer manufacturers can't get this part right --- you cannot fit a 4" exhaust vent tube to a 4" dryer exhaust... Not to mention they leave barely enough to connect ANYthing to let alone the proper venting...

This device solves that in no time... Slide the rubber (PVC?) sleeve onto the dryer side, connect the vent tubing to the adapter, then push the adapter onto the dryer...DONE!