Product review (2 stars): Just so-so
$30 bucks for about $3.00 worth of tin and another $10 bucks on tin foil tape to fix all the air gaps. The product is VERY poorly made, but can be fixed rather easily. Every seam, and I mean EVERY seam, must be taped! I had to buy two just to use the other end so I could extend it to the proper length I needed to clear the washing machine. I ran the venting horizontally to the outside wall vent. I needed at least 45 inches to clear. The taper would cause an issue because it would have required about 5" of space from the back wall. Thereby, limiting the effective length to about 40".  The way I did it required only 2 1/8" inches of space behind both the dryer and washer. If I just used one piece it would have required about 5" of space between the wall and the machines because of the taper transition. Bottom-line, the product can work if fixed. I would say the materials and manufacturing is worth about $10-$15 bucks.