Product review (5 stars): I highly recommend this to everyone
Can't begin to define the difference in the function of this dryer vent cover compared to the typical standard clover.
In our 3600 s.f. metal building, we really need to safeguard against every drafty crevice we notice.  We were
unaware this style cover even existed until I began to realize the dry clothing awaiting folding in the dryer, was more than
noticeably cold.  I mean, really, almost as cold as the outdoor winter month.  Went directly online to AMAZON, and what  do
you know. Once again, AMAZON came through.  I highly recommend this to everyone.  Well, well worth the effort.