Product review (4 stars): Allows for a closer install to the wall than standard flexible ducting
This is the second periscope vent that I've owned, and the build quality of this one is pretty good. Like many of the other reviewers, I taped all the seams. I have a fairly small laundry closet, with the washer and dryer side by side. In order to really install this well and close to the wall, the dryer had to be connected before the washer was in place. How close you are able to install your dryer to the wall depends on how far out of the wall your vent pipe is.
I purchased the washer and dryer from one of the big box stores, and the vent from Amazon. The washer and dryer installers would not install the dryer with this vent, since it wasn't one of the rigid vents that they brought with them. So, if you're planning on having one of these installed with a new washer and dryer, be aware that the company installing may not do it for you.
I was able to install it by myself - it just took a little time and patience. I already had tin snips, so trimming the unused portions wasn't a big deal.