Product review (4 stars): GOOD, BUT, NOT ALL GOOD
This item was just as described.  And was delivered pretty fast.  It is a little flimsy, flimsier than the one that I replaced, but fit and does let exhaust out well.  The "bad" of this item was in it's shipping.  Although it delivered pretty fast, I don't think it was packaged well enough.  It was in an envelope with a thin piece of cardboard for support.  If it had been in a box the Post Office wouldn't have been able to literally "stuff" it into my mailbox with the other mail.  I bought 2 of these and they were both bent on one edge.  Luckily, they were flimsy enough so that I could bend it back mostly into the way it is supposed to be.  It fits, and so far,  the bad part can only be seen by me cause I know where the bad part  is.  Hopefully the seller will see this and take note of it.  All in all, the product was worth it's price, but not worth letting the Post Office have the opportunity to jam it in my mailbox.