Product review (1 stars): Waste of money
It came pre owned which was ok, but it was stuck in position and would not expand or contract.  I intended to cut it down anyway, so not a problem.  Was very difficult to wrangle it apart because it had been crimped in place by the previous owner.

The main problem is that it is supposed to be specific to my model dryer, but only one end fits and no amount of contracting or expand the ends will make it fit.  And even if it did fit, it does not allow any more space than the original duct I had on the dryer.  Huge waste of effort, too.  And it is extremely flimsy besides.  Would not recommend.